OK. (Although -- have you refreshed the page or gone to the permalink to see if the vote is still there? I kind of remember that the vote button changed color but didn't actually record the vote.)
Anyway, I looked it up and in 2011 Eliezer said, "Voting buttons have now been removed from user profile pages."
Yes, of course.
Eliezer said a lot of things.
What's up with that?
In a discussion thread, I can karma vote on anyone.
But if I select a person to see all their posts, for some people, karma is disabled while looking at them, and for others, it's not disabled. Same thing if I look at their posts under the list of all my posts.