About Yoru, he was buffed in the beginning of 2022, he received barely any changes until the big nerfs halfway 2025. that's a good 3 years. You could say there was no reason to not play jett because she was very meta until like end of 2023, but I don't feel like Jett and Yoru contest each others spot that much, the playstyle for a team around Yoru is so much different compared to when you only have a jett. Like you have to fundamentally change your gameplan if you're going with jett or yoru as a duelist. It is still a major shortcoming to me how long Yoru was neglected (sure I'm biased). I don't really remember the timeline around the skye nerfs but she also doesn't really contest yoru in a team comp imo. sure you have the info flashes and the dog, but yoru in itself is a whole ass info gatherer.
I think it would be better if Riot consulted non affiliated or retired pro players for their opinion on things. But it's also dangerous cause ifl if someone knows something before anyone else there could be an unfair advantage somewhere.