If it were my forum I’d be mostly OK with that post. If I were going to take issue with it, I’d say the latter part of the second paragraph turns into a bit of a nasty “call for dick measurement”.
To be fair about how hard moderation is, if a post like that weren’t coming in the wake of the previous storm, it might seem less problematic. As you say, more of an edge case compared to some of the more obvious “guns blazing” stuff.
In the enforcement scheme I suggested, if you decide the post crossed the line, the poster is still getting a “mulligan” before they have to worry about suspension.
Another thing that makes things difficult is age and internet norms. Decades ago (choking on my coffee), there was common internet etiquette advice to lurk on a forum for a period to get a broad sense of the room before you started posting. That’s less the norm now, and probably would be off-putting to most younger prospective community members.