On non-logged-in/no-history YouTube (e.g. a new private browsing window), there'...

On non-logged-in/no-history YouTube (e.g. a new private browsing window), there'll usually be 1-3 such shorts in the shelf on the homepage.

Logged in, I think it's tried to show me such a video just once, after I'd been scrolling for way too long. I hit 'dislike' and it hasn't tried again.