But how about children with SEN who may need to move around. Are we saying that they shouldn't be in pubs?!
I have two children with neurodevelopment disabilities. They aren't allowed to tear around the pub.
When we go out to eat we always choose a suitable table for them, I will ring ahead and reserve to ensure this and pretty much all venues are happy to reserve a specific type of table when you explain why it's needed. We ask for a table either in a quiet corner or against a wall/not in the middle of the floor or a booth if booths are available.
If they need to move then we engineer this into the trip - they can walk to the bar with me to order, they can walk to the toilets to wash hands, they can walk to collect a box of cutlery or some condiments.
If they need to crouch down in a ball they can go under our own table with an arm around my lower leg so I know they're there and haven't crawled off.
If they need to jump or flap, they can go behind the chairs closest to the wall so they're not invading anyone else's space and there's no chance of them colliding with anyone.
If they need a bit of a noise/smell break or to move in a larger way then DH or I takes them outside for a few minutes, finds a quiet/safe spot, and let's them have at it.
There is a lot of middle ground between "don't take them" and "running riot".