I have watch history off on YouTube, if I go onto the shorts tab on YouTube it says "recommendations are off, we rely on your watch history...".
It still shows me shorts from subscriptions on the subscriptions tab, which I don't mind. If you scroll on them it shows you ones from other subscriptions before stopping and showing that message again.
In searches it does show shorts, but will only let you scroll through ~5 before that message comes up again.
I really like this setup because I can see my subscriptions shorts, which are generally fine, and it doesn't let me spend more than like 2m scrolling.