Actually he really lost it with that stud stuff, he could have done some serious dammage to the fella on the ground.
Anyway it's just silly game stuff, it gets overblown because it's with CR...and before anyone jumps, I know he should be more mature, but these competitive fellas has their huge egos and when some rivals, the press or some fans try to trigger them, sometimes they fall. Others are them the ones that start it or go over the top.
It always happened (with Pele, Diego, Romario, etc etc etc), it happens and will always happen as long as the game exists (in this form at least
)
PD: You can bet that Messi it's quite tired of the whole anti Messi narrative of the Madrid press, some Argie and mostly the Mexican press too and how some players, coaches in occasions use that stuff to trigger him. In his last more or less 6 years of his carreer he has shown several times that he can be more feisty, over the top, etc.. sometimes in a good way, other not so much.