Yes but my point is that there are many different theological and ideological camps at work in the Movement. These differences you point out are more than aesthetic; the use of choirs, levels of decorum and use of vernacular are questions of ideology. There are many with in the mainstream Movement, myself included, who are just as wary of some in the younger generations (ok I am part of that generation but still) as they choose to identify through the use of ritual items, like talit katan or phylactories. I could easily say that the use of those items is an aesthetic difference between the different camps. However, I would be wrong.

The most important issue here is that all the camps can learn from each other as we continue to create the Reform Judaism of the future. Like this conversation, learning from each other will only make us stronger.

Is the Progressive or Classical style service the rabbi advocates to be dismissed as just an aesthetic? For instance: What's the big deal about English language services for Americans?

1. All Americans understand English and therefor understand the service. Not just little bits of it or have a general idea of what it may be about. They really and truly understand what they are praying and what is being said to them. For Progressive Reform Jews, understanding is a core value.
2. When the service is in English, it is shorter. Repetition is avoided. People can stay interested more when the service is more concise, more direct, more concentrated, more powerful.
3. Because the services is in English, we can reallocate the Sunday school time and other valuable religious educational resources from language study to study of the Bible, ethics, theology, history, and other substantive topics. The students become better educated Jews and are studying things that can have a positive impact on their lives instead of spending most time on pretending to understand Hebrew. Less bored students are less likely to drop out of school and of Judaism.
4. Because the service is in English, Jews by Choice (most of whom join as adults after getting married to a Jew) are able to fully participate in the service from day one. They are not left feeling like second class Jews because the service is not in their language. They also can devote time in adult education to learning about the Bible, Jewish history and practices, etc. instead of gaining minimal knowledge of Hebrew just to muddle their way through the services like most of us.
5. Because the services are in English, the focus is on what is said which may be inspiring, educational or spiritually uplifting.
6. If we know what we are saying, our prayers can be more sincere. How sincere can we be if we don't understand what we are saying? For Classical Reform Jews, saying what you mean and meaning what you say is important.
7. If the services are in plain English, they are more appealing to more Jews. Before Reform introduced a modern American service, many Jews were dropping out of Judaism, becoming agnostic, atheistic or simply religiously nothing. That is a problem in countries where there is no Progressive Reform alternative today. A lot of nominal Jews (or perhaps we should say people of Jewish ancestry) are repelled by the foreign language services, the foreign style music, the orthodox style religious garb. Unlike the old days, they are free to chose their religion and the danger is that many will be forever lost to Judaism if they don't have a service that they can fully understand and relate to.
8. Many Progressive Jews don't think that pretending to speak Hebrew is likely to impress God. Classical Reform thinks that God has more important criteria for what is a good Jew, or just a good person. Taking care of your family and friends, serving your community and your country, fighting for freedom and justice in the world are are where we should devote our efforts if we want to do God's work.
9. When the services are in our own language, we can reach out to our Protestant and Catholic neighbors and friends and welcome them to join in our worship of the one true God.

These are a few of the reasons why the Classical vs. Neo-Orthodox differences matter.

"Neo-Orthodoxy", as you can read in the Wikipedia article, or the Encyclopedia Judaica, has an accepted historical meaning, namely the Orthodoxy influenced by 19th century Rabbi Samson Raphael Hirsch. Born in the same era as Reform, it is closely related to "Modern Orthodoxy". It believes in Orthodox observance, and also integration with modern life. Modern Orthodoxy is most prominently represented by Yeshiva University, with it's motto "Torah U'maddah", or "Torah and Science".

It is a proud and vital movement, but very different from some traditionalist trends in Reform today. For a start none of these views in Reform accept halacha as the authoritative basis for Judaism.