Yeah, sure, but you’re potentially messing with the business’s customers.
No not really, because if you’re eating at the type of venue where the customers arrange for their own seating, it’s a valid ask, and the owners of the restaurant don’t monitor that and wouldn’t consider that interference.
If you’re eating at a venue where the restaurant staff seats you, then you wouldn’t really be asking someone how long they’re going to be at a table, and therefore not interfering.
Just stay the appropriate time to enjoy your meal and make room for others to enjoy it as well.
That’s all I’m advocating, plus don’t get angry/upset if someone asks you how much longer you’re going to be, especially when resources are scarce.
Don’t be an asshole, we have enough of that shit going around these days.