Its not just a RM-conspiracy, Xabi Alonso escaped red cards like a champ for Bayern as well, i believe.
Is it is beard that makes him look cozy? I dont know.
Anyhow, Casemiro clearly picked up his legacy in that regard, even though he isnt the same type of DM.
I have no idea whats going on there. Maybe its their reputation of being tough players that makes referees be more lenient. Either way its outrageous.