How intelligent it is or isn’t is irrelevant. We talk about much dumber programs than AI as being consumers of files and data including things like compilers. Would it not be person use for you to view a picture in a photo viewer or try and edit it in GIMP?
It’s not data theft at all unless the courts and law says it is. Ranting on lemmy won’t change that fact. Theft is a construct of law.
You can add clauses against use as AI training data to your licence if you wish.