Without the rest of the context and no, criticism is not harmful. If it is a "sin" like you say, should we look at things you've said about FOSS projects?

> Fork it, patch it, there is no burden

Either you're delusional or you haven't done either of the things.

> if people care maintainers would switch, if switched enough patch would get in upstream or provide own repository with patches, that's FOSS way.

Yeah, and it'll take the next decade, being optimistic. GPU acceleration in Chromium and Firefox on Linux is a perfect example how absolute shit that "way" is.

> How much do you actually care? How much would you pay? Is it free as speech or free as beer?

Feel free (as in freedom) to just type out your arguments instead of asking rhetorical questions.