I think you are being EXTREMELY picky. The dish is served in a particular style, the smaller than usual chunks are very well cooked and succulent, you also get a lot. I suspect you are the kind of person who sees fault in everything, I’d hate to have you as a customer.
As for the facewipe incident, is suspect they do that to clear crumbs off the table so it doesn’t look unsightly to people arriving at the restaurant. I’m sure they clean it properly once you have left.