> It's Verified on Flathub, which means it's officially maintained by Krita's developers.
It just mean it got verified and an icon at a point. Not a seal of approval.
Eg. https://github.com/flathub/org.kde.krita/commits/master/ & https://github.com/flathub/org.kde.krita/graphs/contributors : not a single nickname in this list are part of weekly IRC meeting/decisions, or assigned to official bug-fix (as far as I know).
It really is a community package, and can be very serious, good, well done, but not officially beta-tested afaik.