I'm guessing the maintainer has some other stuff going on in his life and this was the straw that broke the camel's back. I hope he overcomes whatever he's going through and winds up more resilient and more content.
This is about as big of a recognition a single troll could get in OSS with no code contributed.
As advice? No... Maybe slightly? At least it is sort of actionable I guess.
I agree with most everything else you said, and it invites further conversation on whether this is exactly what the troll wanted (recognition, feeling powerful for ousting the maintainer, etc.).
The original comment I replied to, a one-liner with the most overused platitude possible, did not invite any further conversation and contributed nothing which is why I sarcastically called it out.