But for real fuck slack. Dumbest software selection you could make.

Theory. Any software that is marketed is going to suck. If it is marketed they have to recoup cost. If they are going to recoup cost the software is going to be full of dark patterns to try extract money out of you and keep you from using your own solutions that could get past the limitations.

There has to be some threshold where beyond X dollars annual spent on marketing the software must be a mistake to use.