The linked rule does not make such a distinction, and I don't see how this rule could be enforced with such a caveat, either.

Hence no, none of these examples should be okay. Even if pure translation and grammar check is gonna be effectively impossible to detect too, so likely pointless to talk about

And the last one is often detectable and very clearly against it - I'm not sure how you can come to any other conclusion

> I don't see how this rule could be enforced with such a caveat

I don't see how this rule is going to be enforced anyway. Many people posting with AI help won't get noticed at all and about 100 times a many people are going to be accused of using AI because they use proper grammar.