There it is, your classic fallback every time you lose an argument: "You actually agree with me, so I win."
If a person has to construct a fake opponent to disagree with, the logical conclusion is that they are incapable of disagreeing with the real argument.
"Potentially illegal" for straight people to kiss in public!
Yes, there are public indecency laws in the world. "We're going to hold a parade so that everyone has to see us making out" is not a normal or accepted thing. There are rare occasions where things like that happen, circling back to Mardi Gras, but you are delusional to imagine that as an average, everyday thing.
To Seanchaidh's accidental point, Rosa Parks was doing an average, everyday thing. That sitting on a bus was picking a fight is indication of the societal issue. You want to frame Pride in the same way, but it just isn't at all comparable.
which is at odds even with dictionary definitions from the time, and nobody else shares?
It isn't at odds with the dictionary definition you posted.
" pleasure or satisfaction in one’s actions or qualities or possessions " is describing self-importance.
" a proper sense of what is fitting for one’s position or character " is describing self-importance.
" unduly high opinion of one’s own qualities or merits " is describing self-importance.
It is kind of amazing to me that you can read those things and think "that's just comfort in one's identity", when it's talking about pleasure derived from owning things or doing things, or acting in a way deemed fitting for a social position (like royalty), or just explicitly saying having an unduly high opinion of oneself. It wasn't worth engaging with this when you were saying it supported your understanding, there is vagueness enough in words that I'm sure you've found a way to believe that. But to say it's at odds with what I'm saying? No, absolutely not, you demonstrated through your own research that the meaning of pride at the time was absolutely about self-importance in multiple ways. The closest you get to your idea is if you horseblind it down to "...satisfaction in one's... qualities...", but even that is more like someone admiring themself in a mirror because they think they are very good looking than it is a gay person not being overly self-conscious or worried about the judgment of others.