@Elmithian I mean, it may have shifted lately? But notice that I was talking about when it was STARTING to get used, around 7ish months ago. I honestly don't know how, or if, it was used before that, but at that point (when it became famous) it was with the whole "giving money to female streamers" stuff. So basically the simp was (is) the dude who "keeps throwing away stuff and money in the hopes of being noticed/getting sex, which he'll never get", more or less.
I get your point about the different uses, and it shifting to a joke. Like how you can say "dude, you like flowers? That' so gay" and it doesn't REALLY mean "gay". I just very much doubt it applies here now, and especially not 7 months ago.
Also, context is important. When you write "fucking simp", without anything else, IF you're joking or being sarcastic you're not transmitting it properly. And if you're using the word "seriously", with the "fucking" you're definitely insulting, and not saying "guy supporting the girl he likes". It's 100% "beta cuck" (which, again, is also wrong, in this case twice).
Sorry for the rant, but I'm a translator AND a language teacher (and amateur writer), and seeing literally everyfuckingone using words wrong triggers me more than it should 😂