The biggest culprit is Son. Pulling out of tackles and headers, and going through the motions of shutting down the opposition. He has surpassed anything we've seen from the French lads.
Bale is another who has repeatedly not been willing to put his body through the pain barrier, whilst Kane just picks and chooses when to put the big shift in.
I'm not sure why Dele even gets a mention in that bad boy list at the moment. All that guy has done is got his head down all season and wait for a fair chance to prove his talents. The last time he played with Kane, Son and Bale he ended up having to come off after 65 mins as he'd done the running for the 3 of them. I watched him run past Kane multiple times to shut down defenders. It's clear to me that, if he wants to resume his career whilst Jose is in charge, he needs to get himself a move in the summer.