No one is allowed to change and fix it but the developer, thus you are harmed by being dependent on the will and motivations of the dev. Increasing dependence is always malus
Fedora IS the most modern distro. First to adopt pipewire, systemd, enables flatpaks by default and btrfs. Probably other things I don’t know. Being first is one of their core goals
You’re not wrong. But you are talking about the extreme who won’t use anything non-FOSS. In general, it is fair to say that all proprietary software is malware.