Ever worked somewhere where management got cleaned out and replaced with new people who had no existing connection to the place?

Bad mods have always been an issue, but for most places there would at least be some sort of chain of succession where the person who started the community brought on somebody they thought was good, and so on. Most places in having multiple mods would have crossover between new and old mods.

Nuking all that and appointing some rando has a much higher chance that the new mod is going to be bad. Look at the snackexchance drama where some rando totally “randomly” got appointed head mod and his first action was talking about getting government ID verification going for exchanges without asking the community anything.

Reddit will likely be able to subdue most subreddits eventually, but the time and effort spent doing so will be wasteful and publicly ugly as they parade in various mods, and have to step in to crack down on userbases bent on being disruptive.