As another example, imagine if "trans women are" autosuggested "men" or "ugly" for the next prediction.
This would probably be a bad customer experience for many people, even if Apple could prove these are simply the most common n-gram completions.
And if they altered their training data to avoid completions that are politically unpalatable, IMO that's actually much much worse than a grey list.
I'm a big free speech guy but this one is genuinely a bit complex.
Autocomplete should be following the user's own behaviour. If a user thinks that "trans women are men", then it will be not a universal experience, it is just this separated user's own statistics.