Edit#3: Yuzu and Citra have now been removed from the Flathub website, but are however still available via their flatpak commands:
flatpak install flathub org.yuzu_emu.yuzu
flatpak install flathub org.citra_emu.citra
For more context, A Flathub admin responded to someone on the Flathub Matrix channel saying that Yuzu won't be removed from Flathub completely until they "understand legal implications better"
Would make more sense to be cloning Ryuijunx repository since its fully open source. Yuzu had some closed source code, so its less easily fully preserved.
The repo could be shut down/removed, so Having copies is always a good thing. I think I read earlier that the yuzu source had already made it's way into the wild?