I totally agree with #1, somewhat agree with #2, and somewhat disagree with #3.
For support, I would point to the fact that both Nobara and Pop OS! have very helpful communities and are quite good about directing users to use those channels to troubleshot problems rather than simply googling them.
As for upstream distros being generally less prone to breaking? I can’t say that has aligned with my experience. My laptop had more issues with Fedora than any other distro I tested on it, and while Debian is definitely pretty solid in terms of stability, the age of the packages and the general unfriendliness of the user experience don’t quite make up for it, in my opinion.
This is obviously why the question of “which is the best beginner distro?” remains a point of perpetual debate!