circulated by someone unfamiliar with guitars or believing no one will care how sloppy it is.

Someone who's illiterate, too.

The 5 strings on the instrument with only 4 tunning keys?

... but whatever, it's still funny. I work in Photoshop nearly every day, and folks have been having fun altering images for memes for years, and some of 'em are really good at it. Photoshop is very complex and versatile software; there's shit it can do that I still haven't had occasion to explore. AI is just next-level graphics manipulation. I haven't tried it yet, but I'm going to.
If AI is deliberately used to deceive, that's one thing. But a Shi Tzu playing a ukulele is nothing to get all bent out of shape over.

Our dog barks if a leaf falls, fortunately not for 27 minutes.

He's less barky than he used to be but he'll still go on about stuff for quite some time!