Speaking of CompuServe, in 16 years there, much of it is as a Sysop, I found there were two major buzz kills. One was the collection of trolls who would litter the forums with their sneering condescension. And the other was overly aggressive thread management by fellow sysops.
Having been the subject of [what i felt was an overly aggressive] "locking" on one of my firsts posts to the waze forums, I can readily sympathize with you.
What I've come to realize is that this type of interaction is a product of the tool (phpBB) and its [mis-]application.
We're trying to have it be an announcement system, a system-status/monitoring tool, a bug-reporting tool, a knowledge base, a user-rating system, and probably several other things and oh-by-the-way a discussion forum when the tool is really meant for only one of those.
This [mis-]use arguably necessitates actions by moderators that sometimes come off as brusk, condescending, and generally unfriendly--especially given the size of the user base (and the ratio of users to moderators). That some of us who have been locked (looking strictly at myself here) have, shall we say, a healthy self esteem and probably a bit of ASD doesn't make it any easier on the moderators.
This all leads to my oft-repeated call for a new tool. Something purpose-built rather than cobbled together. Lithium, StackExchange, and SlashDot immediately come to mind. I'm sure there are others.
Until we get a new tool, try to be patient with the folks doing the moderation. Theirs is a Stygian/Sisyphean/thankless task.