This, it's totally bogus Apple claiming you need all these advanced processors for auto correction that works. T9 was a million times better then then the absolute cluster disaster Apple has had in iOS for years now. I read Apple made it so their system uses information from the cloud and uses words other people save or type, and the whole thing is a disaster auto capitalising in the middle of words, putting other words into the word your trying to type, get one letter wrong in a word and it refuses point blank to auto spell it. I have this multiple times in the day on my iPad Pro M1 and iPhone 13 Pro, and have had the same issues on my older Apple devices.
Auto spell and auto correct has frankly been one area Android has totally embarrassed Apple in. And it's something that's existed for what over 10 or 20 years now?
So to claim you need modern new processors for auto spell to work is an utter joke and Apple should be even more ashamed and embarrassed of themselves then they already were over this feature.
Sorry it's a bit of a sore subject for me, it winds me up no end lol.