I don't know what to make of this? I think when the team is winning and good, one might find it funny. When they are losing, one might find it childish, annoying, and inappropriate. The LOL at the end too, not a good look. I don't think it is ever a good idea to tweak the other team's best player. And personally, I do not think you want a head coach to behave this way. Maturity and setting a tone and culture is important from the team's leader.
he needs to be supervised more aggressively.