Eh, I dunno. If a moderator refuses to announce, explain, or accept feedback on their judgements then I consider that pretty tyrannical, especially if they try to present an appearance of being more levelheaded and principled than they actually are.
When my account disappeared from funnyjunk.com nobody knew it happened. Even I didn't get any kind of message or notification indicating that I was being kicked out by an actual person and not just some cryptic bug. It was very clear that many users and moderators looked down on me, but even the administrator refused to publicly stand by what happened to my accout. Personally, I'd like to be able to call that tyrannical, even if us users technically had the ability to opt out of things that we were not allowed to know were happening
Since that event, my highest standard for a platform is that there be tangible guaruntees and transparency for its users.
Everything else you said is spot on though.