The case of fanon vs canon Qi Qingqi
Perhaps calling it "fanon" is a bit of an exaggeration--I just mean the somewhat recurring fandom tendency to characterize Qi Qingqi as unreasonable, cruel, or prudish.
Now I must make it very clear, that people should absolutely portray characters and situations however they wish, regardless of what the canon says.
However, I also suspect that sometimes, people simply think that the harsh, prudish version of Qi Qingqi is canon, and therefore they feel compelled to portray her a certain way, not even because they particularly want or need her to be that way, but simply because they believe that's how she's supposed to be.
But in the svsss text, we never really see her described in a negative light. When SY first brings up the character of Qi Qingqi, he says:
原作的齐清萋和沈清秋没什么交情,也不怎么打交道。不过这几年,沈清秋偶尔与她共事,喜欢她心直口快泼辣,还相处的倒还不错。
In the original story, Qi Qingqi and Shen Qingqiu shared no real friendship and rarely even interacted, but in recent years, Shen Qingqiu had begun to occasionally work with her. He liked that she was forthright and feisty, and so he got on pretty well with her."
After this we see Qqq constantly ribbing sy!sqq, in a manner that's clearly friendly and enjoyed by sqq. The only person she's harsh to is lbh, which considering the situation, is a pretty reasonable response. Even nyy, lbh's former best friend, thinks he's an unhinged traitor at that point in the story. Qqq's reasonably dismayed by the fact that sqq is dating his own disciple, who's both a demon emperor and has tried to literally end the world after siccing a demon army on Cang Qiong. And even so, she is never hateful about it. In fact, she flips out more about lqg lying to sqq about lbh being dead, because she's worried it'd traumatize sy.
I think another strike against her comes from the way she talks about sj, but when you look at the og text, all she says is:
(When the peak lords are discussing sqq's sudden personality change after sy shows up, and they conclude that he's lost his memories)
齐清萋皱皱鼻子:“掌门师兄,莫非你还希望他想起来,恢复以前那种……为人处世。”
Qi Qingqi wrinkled her nose: "Zhangmen-shixiong, do you really want him to remember and return to... the way he used to act?"
We already know that Qi Qingqi is a pretty blunt person, and if she really has a serious problem with someone, she'd just say it outright. In this scene, it's another unnamed peak lord who actually goes into a tirade about their problem with sj:
有峰主不解道:“以往他见了掌门师兄和同门从不好好打招呼,也不登门拜访,讲话绵里藏针,阴阳怪气,有什么好的。还是现在这样好些。”
A Peak Lord said with some bewilderment: "Before, he never properly greeted Zhangmen-shxiong and his martial family, has never shown up to visit anyone. Listening to him talk was like finding hidden needles wrapped in silk, it was all passive aggressive sarcasm. What was so good about that? I prefer the way he is now.
This is totally unrelated but in the canon storyline, the other peak lords didn't think sj was a lecher or creep. That comes after Bingge's big exposé. Their biggest problem with him was just that he was a Bitch.
This also means that in the sv canon, Qqq does not really say anything that can be read as prudish. In the very first carriage scene above, sy very blatantly stares at and checks out her underage disciple, going on about how beautiful she is, and all she does in response is the equivalent of pinching his face in exasperation, presumably because she knows sy is just being a little shit and doesn't mean anything by it. After this, sy proceeds to stare unblinkingly at lmy (and lbh) while munching on popcorn, with no further comment from qqq lol.
At the end of the day, Qi Qingqi is the only named female Peak Lord in the story, and she has evidently been written with a lot of love. Alongside lqg and yqy, she is one of the biggest sy defenders, and we have no reason to believe she had any beef with sj, other than thinking he was really fucking anti-social. Her not wanting sj "back" is based on the assumption that sy is sj, just a happier version of him without his darker memories, not because she wants sj dead.
We don't know a lot about Qi Qingqi's personal story, and I'm of the opinion that we should give her whatever role that needs to be filled in our own stories, positive or negative, in character or completely OOC. But we don't all need to make her some unreasonable prude just because, since that clearly isn't who she is in the svsss story.