^In fairness Rin and Shirou have a likeable relationship in my opinion. For example their relationship in the Unlimited Blade Works series is dynamic, and how they bounce off each other is interesting. I'm not really sure what "that's how fate universe works" means here, as Shirou is either absent or not the focus of numerous entries in the franchise. This is also coming from someone that prefers the Rin and Artoria ship.
^I feel like you're trying to insult moe, when Ningguang isn't even moe. Plus you're saying "weebs", when the main market for Genshin is it's origin country, China. Also while her model could be a tad more mature looking in game, I think she does look pretty mature within the game's art style, and for the most part appropriately looks like a 25 year old elegant beauty. Notably ALL the official character art is higher detail and more refined than the in game models. That's very common in gaming and nothing new, plus there's numerous good reasons for the models being lower in detail. Here's Ningguang's model and her official portrait. In that official portrait art she really does look like an elegant beautiful 25 year old to me, and I think that's how most people see her character. I think it's also why this fanart even exists.
That reminds me... some time back Coco was inviting practically every other member of hololive in Japan to come live in the holohouse. Several of them seemed interested, but I haven't heard if any had actually moved in.