I can think of one older teenager/1st year college guy who plays keys in a band. That's the only one...
As far as using arrangers specifically? Well, hard to say...technology will advance us past what we call "arrangers" over the next few decades, for sure.
I was 40 years old before I had any clue things like this even existed.
As is the case now, I think there will be some relatively small group of users using whatever is available then.
An issue I'm already facing, is the younger audiences that are showing up in Nursing Homes and Retirement Communities. They want more and more of the 70's music, which doesn't always translate well to arrangers.
Honest to god, there's a ELP fan at one of my clients and I keep telling him, that's going to be rough trying to play like Emerson did on an arranger.
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Bill in Dayton
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Bill in Dayton