I Love Xamarin, I am not pinpointing anyone as well.
This is Xamarin Forms Github (1265 open, 2099 closed)
This is React-Native Github (429 open, 15000+ closed)
I am kind of disappointed with the level of support, there are still 1200+ issues. This is not what I expect from a company like Microsoft.
Can't you just resolve the pending issues, rather than providing new controls CollectionView, Shell?
Old things are still broken and you just adding new buggy controls over it.
I know you provide support to many platforms, but shouldn't you fix old buggy things first?