Snap doesn’t just bring lots of hate in comments it also brings a lot of bloat in your system which is a big no in Linux community. Another thing is canonical is going out of their way to force snap. In Ubuntu even if you do apt install it is installing snap packages.
I’m not sure if there are more snap packages than flatpaks or .deb/.rpm but most Linux users are competent enough to either add custom repos or follow simple build instructions to build from source.
But flatpak also brings a lot of bloat. That’s the point of these 2 formats. You are trading bloat for portability.
The question here is not which one but why not both[*]? Also the target audience for this distro doesn’t know how to add repos, that’s the point of it.
[*] the answer is that Snap Store has had malware in it multiple times but that could imo be solved by a disclaimer