Tl;dr:

The Therac-25, a radiation therapy machine produced by Atomic Energy of Canada Limited (AECL), was implicated in six accidents between 1985 and 1987 where patients received massive radiation overdoses due to software errors.

I guess because there are a lot of people who just don’t care. Look at Twitter, Musk could do what he wants Twitter still has a big number of users.

Also reddit has a huge and very active community. This is very hard to replace.