Maybe it's a talk show host prerequisite? The list of massive asshole is long. Jay Leno? Never funny but condescending AF to guests and staff, Letterman had his moments of crossing from satire to douchery, James Oliver is repugnant elitist, Fallon is okay if only stopped giggling his way through every show. Only Noah and Stewart were any good.
And having spent over a dozen years as a pro chef in top tier places., the best trend ever was having Chef's come out to the tables. There were times when I went out not to bask in compliments but to shred some dickwad publicly for abusing staff.
Corden is just another celebrity tool.