I'm another one who has a child with autism, albeit a now giant 6ft 15yo one. I actually think there is a middle ground.
It's socially inclusive to be able to sit at the table together for mealtimes.
It's beneficial if you want to go out together as a family, if you're in a less tolerant environment, for your DC at school etc, etc. Yes I know that it's hard and exhausting for autistic children to conform etc but actually life can't just be about their needs it's important to think about compromise to meet the whole families needs.
However, the stimulation of all sitting together can make eating difficult if not impossible. For a bordering underweight child this is quite a pressure (mine was 90th on height and from memory around 10th on weight, I get the worry).
I encouraged everyone at the table until most had cleared their plates. No pressure at all on the amount DS1 ate - if any. At the end of the general eating time DS1 could eat his meal in peace at the table or in one place (not wondering around i.e. at a coffee table).
Eating out I found feeding DS1 at home first and letting him choose a starter/ pudding or side with no pressure to eat which ment we could, at quiet times, in known quiet restaurants get through a quick meal.
We have allowed some use of tech at the table to establish sitting at the table for meal times and take tech out with us.
At 15, mostly DS1 now manages a good meal albeit slowly, with the rest of us, mostly precut bite size food. We are able to eat out and wider family accept DS1 may order just an ice cream/ pate or naan bread - but he's happiest that way. Sometimes he goes for a whole three courses and sides locks on to it and ploughs through it without lifting his head. His weight is just into acceptable (if he'd stop growing taller that might help).
My experience is of one child and every child is going to be different. I do know that the pressure of parenting an autistic child breaks down many, many relationships. My son's dad left when he was 3. I've been remarried for ten years but with current DH, we've had some serious wobbles over parenting DS1. There is no right path or instruction manual so you have to somehow find common ground and agree a united front.