This makes me far more reluctant to engage in general.
Ethically, I think there should at least be an option to filter these messages from the personal profile feed. Everyone should have a right to forget about encounters with negative people or take action to protect their own mental health above any beyond any platform functionality. If a person is encountering hate, abuse, or for any arbitrary reason, they should not be confronted with any form of reminder when they choose to remove the reference.
(Currently on .world @ version 19.3)
Also, the comments counter for a post and blocked users do not jive.
I noticed this bug a few weeks ago and fixed it. This will be included in the next release.