People had throwed shit at it because of their own specific issues and its "slow" development pace without realizing it's a titanic endeavour

I think most realize that it is a titanic endeavour and know that it might take years until their issues are solved, so they get angry when people are like "works for me, so everyone should use it now". I've tried Wayland twice, each time it was deemed "ready" by someone, and each time something obvious was broken. x.org works and does what I want, so I'll continue using that.