I'm a Conor fan but just last month we saw Sergey Kovalev get up in his grill, jab his finger into his chest and Conor looked like he'd seen a ghost. He isn't stupid, he's seen Don Frye get pieced up by a guy with approximately one boxing match to his name; he knows not to mess with a scary looking Russian that hits as hard as Sergey does.
Conor, for all his success in MMA, will always have to live with the fact he wasn't good enough to cut it in boxing. Just like he wasn't good enough to cut it in football, another sport I've heard him denigrate.