@blogdiva @ckent @larsivi @mekkaokereke The vast majority of Mastodon instances are run my amateur enthusiasts.
Nothing against amateur enthusiasts - I count myself among them (albeit in a different field) - but ultimately the backbone of any system are the people who display a certain level of professionalism. And with amateur enthusiasts you never know what you are dealing with unless you observe them for some time.
A further problem is that how much time and effort you can commit to such hobby projects is highly dependent on your life circumstances. People in developed countries with stable sources of income - which statistically speaking is likely to mean "white people" - have it easier to to find the time for projects like running a Mastodon instance than people in less stable circumstances, even though the benefits for an independent social media system would be even greater for them (as the owners of commercial social media definitely don't have their best interest in mind).