As a long-time Gentoo user and supporter, my main issue is the time investment. Not the investment in installing and initial setup, not compilation in the background (binary packages make things much easier today), but staying up-to-date with software upgrades and changes. I did not mind it before the "life happened", but now when it takes even one available night in a month or two, it seems a lot.
Other issue is when you need something promptly, if nothing else to test it out or one-use only and you either have to wait or use something like official binary/flatpak...
Whenever I think that the time I invested in some of the mini-projects is lost/wasted time and that it was probably better choice to do just about anything else instead - I come across something like this. The only thing I can conclude is that there is no such thing as wasted time, as long you enjoy the road.
This might be too harsh... Do not think it is betrayal, but it is idiotic and can understand someones frustration with it. On par with FreeBSD developers using MacOS to develop their OS.