Technology has given us new ways to make music, new ways to record music, new ways to edit music. There are some that are going to approach these new tools seriously, some will ignore them like the plague, and some will dabble in them from time to time. These differing approaches to new music technologies have nothing to do with one's knowledge of music, one's musicianship, or one's seriousness as a musician. Some excellent composers are simply not facile with technology; other than using Sibelius or Finale they are not interested in what computer-based instruments can do. That's fine, there's room in this world for every and any approach. Seriousness of intent is not determined by the tools we choose to make music with, that's how it appears to me.
This is how I see it too. 50 years ago, the symphony orchestra was the sonic palette that composers had to work with, but today we have all manner of instrumentation, literally limitless sonic potential with electronic instruments, filters and all manner of timbre and modulation at our disposal. If Mozart or some of the other great composers from their time were alive today; they would probably not confine their work to only symphony orchestra when there are all these other sonic tools out there. IMHO. Unless they were film score composers hehe 😉
There is definitely a certain tradition associated with the symphony orchestra and a historical legacy. We honor this history and will continue to do so. A relatively small number of individuals are able to work in that musical context. To execute works for this medium requires extensive training and understanding about the symphony orchestra, a lot of which comes only through actual experience. And that is fine. Its extremely expensive, financially, for an orchestra to muck its way through a score created by someone that doesn't know what they are doing. I think its completely valid to say that actual symphony orchestras and their committees should be (and are) discerning about which works they will be willing to perform, which meet a certain level of competency in that specific field of music. No argument.
I am thankful that VSL and other sample developers have made it their mission to make these kinds of sample based tools available for the rest of us mere mortals to compose and learn about the symphony orchestra and try ideas out. I actually specifically chose the VSL VI series initially for exactly the reason that it was not a big set of layered trailer music tools...it was a set of articulations covering the instruments of the symphony orchestra and would REQUIRE me to learn how to properly articulate instrument parts, layer instruments to create sonic timbres, balance them and work with them in ways that might be closer to reality. I realize its still possible to do things completely wrong with sample libraries that would never work with real players...but I feel VSL has done an incredible job of staying close to the original instruments. It honors the symphony orchestra, its tradition and legacy. 20 years ago, this was simply not possible (or may have been out of my budget at the time).
But I also think that we have a lot more sonic potential beyond the symphony orchestra. We have instruments made possible by modern technology. Its easier to work with, less expensive to work with and can be used to create endless sonic possibilities, perhaps some that have not been tried yet.
Hans Zimmer's score from Dune is an awesome example of this, IMHO.