They have the feature, sure, whether it works properly for the languages you are using is another thing altogether.
Somewhat close languages (french/english) are often not great, and adding CJK with anything other than english to the mix is also a recipe for a bad experience.
Even for just English, it gets some words wrong constantly for me. I would love to be able to watch someone type in their phone to see if I'm just using it wrong
Well, maybe it’s just personal preference, but I use Dutch and English (a closer language pair than FR/EN) on Android and iPadOS, and it works great for me.
Of course, you still need to switch for CJK languages (because they need an IME), but that’s a given.
Somewhat close languages (french/english) are often not great, and adding CJK with anything other than english to the mix is also a recipe for a bad experience.