[AltF4me]

It says you have to click and hold

[JohnFen]

Sure, but (I think this is what the commenter was asking about), it has to hit the page in order to generate the preview, does it not?

[Vinnl]

Yes, but clicking also results in your browser having to hit the page. The concern is doing so accidentally, which is reasonable if it required a hover interaction (but luckily, it doesn't).

[ErneX]

Obviously but you are triggering it, if you don’t do it it won’t do it.

Safari is exactly the same on iOS at least.