Hacker News, and we who frequent it, ought to have that in mind.
It's not like only slimy people get to use moderator tools like on Reddit, since you need a lot of reputation points you get by having questions and answers voted up. It's more like (1) you select people who write surface-level-good answers since that's what's upvoted, and they moderate with a similar attitude and (2) once you have access to moderator tools you're forced to conform with (1) or your access is revoked, and (3) the company is completely incompetent and doesn't give a shit about any of this.
We’re talking about how communities can become toxic. How we humans sometimes create an environment that is at odds with our intentions. Or at least what we outwardly claim to be our intentions.
I think it is a bit sad when people feel they have to be compensated to not let a community deteriorate.
The answer to all of these questions is yes, for the most part. Volunteers are much harder to wrangle than employees and it's much easier for drama and disagreements to flare when there are zero consequences other than losing an unpaid position, particularly if anonymity is in the mix.
Volunteers can be great but on average they're going to be far harder to manage and far more fickle than employees.