I get not liking it (even if it happens only once a year), but saying that the only reason is "greed" is not only reductive but incorrect in my opinion. The idea that KDE has an income source separate from large corps and vendors but regular users, for instance, makes a lot of sense to me. (And the negative blog post you cite clearly involves some not-totally-public drama; I would be very hesitant to judge a project based off something like that, especially since other people have contradicted that person's view elsewhere.)
I can't say I understand a lot of your other points (what does "Software should not be about putting pressure on people - it should be about enabling people" mean, and how does KDE put pressure on people?). And what do bad GTK docs have to do with KDE?