You have two kinds of Chef's.
One who has his own Restaurant.
One who works in the Restaurant.
The latter of the two I think could do with a tip.
The owner...not so much, because they make their money from the Restaurant.
If it was just the one owner/chef, yes that would be nice...They have to re-invent time and time again, if a good chef.
Anyone like Gordon....they don't need the tip, believe me!