Putting this here or on the suggestion board was a coin flip. In the Notifications panel it says I last clicked my own link 12 hours ago, yet I try to click my link and it says I've already clicked my link in the last 12 hours. I always thought of the timing on the notification as being done >= the hours listed. I'm guessing it actually rounds to the nearest hour. It took a decade to realize this, so obviously not vital. It will bug me though, now that I know about it. My "OCD."

Hmmm, oh, the notification log? Yeah, it just uses the shared function for that.

Probably worth disabling the actual link on profiles until you can click them again tbh, might be more obvious.

I think I'd still end up attempting to check someone's profile to see if I can click again, which would tell me I can't click any profiles that I've clicked basically. Though we use a click all link. Didn't IW have that? Can't remember. It's been a thing though.
But yeah, if anything, there could be a timer counting down next to the click link button. So you wouldn't even have to attempt to click their link.

One thing to note is I personally rarely click the links in profiles. I'm usually returning a click in my notifications.