Mar 10, 2022
I have been unable to comment on people's posts for actual years (I forget when I joined, but it's definitely been more than five years), and I finally gathered the courage to contact support, who IMMEDIATELY fixed it. Apparently it's a glitch and I was just too anxiety-ridden to ask about it.
So for all of you folks that groan when I inevitably comment on every other post, just know that you can blame Tumblr for being helpful.