I don't think he's simply tolerating it without also enjoying it in some way, whether platonic or otherwise.
some more moments:
- LK & SM sitting on a bed during a stream. SM lies back on the bed, LK immediately manhandles SM over his lap with his butt facing the camera, holding him in place with one arm around his waist, the other around his thighs. Some fruitless squirming happens, during which LK's hold becomes more secure. Then he spanks SM's butt a few times & Han joins in.