There always have been
WordPress never have AI features bulit into them. It must comes from a plugin.
This however doesn’t likely generate the image on the server directly, but use an external service instead, so it isn’t likely the cause.
Since you didn’t tell what reason your account is suspended for, I cannot give further suggestions.
I don’t know how clearing the cache helps avoid suspension, nor do I know what kind of “cache” you are referring to. Please clarify.