Because it's about realiability, they just can't get the butterfly mechanism to work without failing eventually and don't want to replace keyboards constantly. It's irrelavant that some people like the feel of the butterfly keyboard more if it breaks far too often.
Makes sense, thanks.
Agree the mechanism is really very good. Just keeps breaking, unfortunately.
I've had the first butterfly model (wast it 2016?), and indeed the keys would get stuck easily and I had to clean the keyboard with compressed air every other day, but even then I didn't have a single key broken down completely to stop functioning. And the 2018 model is much better, I will blow it with air occasionally, more as a precaution measure, and it works just fine.
Compressed air doesn't fix it, sadly. Going in for repair.