I understand why the ref can make the decision he has. Given the fact is all happens very quickly.
However watching the replay I just felt that as McKenna is going down, Morelos already has his leg in the air and any attempt to put it down "naturally" are hindered by the fact that McKennas leg is there.
Hence why it looks like a "double kick" at McKenna.
I dont deny that morelos is being cheeky in trying to leave something on Mckenna because all players tend to do this to a degree, but it certainly isnt a stamp as people are trying to portray.
Ultimately he just needs to stick to what hes good at in terms of roughing the defenders up without overstepping the mark and giving the ref the opportunity to use his reputation against him.