Kitchen talk should NEVER reach the customer.
I disagree, but then again culture differs. If someone is being disrespectful to the chef, I think it’s the chef’s right to point that out.
It’s not like customer is somehow more important than the kitchen staff.
It’s their business and I believe they have the right to choose/wish/ask how customers conduct.
Would I have an issue with it? Probably. Would I suck it up? Probably.
But but, muh own navel is so important.