While my immediate reaction was similar, it's not that simple in the long run. 2 reasons:
1) PCs will adopt the ARM architecture sooner or later, too. So it's not like this work is in vain - even if you stay away from Apple products, you'll be using ARM computer hardware eventually.
2) Multiplatform software having to add one more version to the dev environment - apple silicon in this case - means you need to rethink the frameworks you're using, the abstraction levels you're coding on, the tools you're leveraging to compile & deploy stuff. For DAWs that have been on the market for 10+ years this might be disruptive & painfull, but in the long run having to review and perhaps rewrite chunks of code will help everyone, as a more modern & nimble code base will help iterating new features and ideas quicker. There's an interview with U-He's Urs where he said explicitly that doing M1 versions of their plugins benefitted everyone (in terms of CPU efficiency) because they had to dig deep and finally rewrite the parts of the code they were afraid to - or couldn't find the time to - touch before.
