Given his immense influence in the chess world, any controversy surrounding him tends to spark strong reactions. But, I think he enjoys it and the PR that goes a long with it!
Accusations are nothing but accusations, so, we can't really draw any conclusions on that one unless either of them admit it, which they won't.
Carlsen has always been a dominant force in chess, and while some may interpret his decisions as driven by ego, others see them as a natural evolution of a player who has achieved everything in classical chess and is seeking new challenges. His ego definitely plays some part in it, late arrivals at multiple competitions and how he acts in his YouTube videos, notably his video a few months ago "I'm Revolutionizing Chess" -
https://youtu.be/ie93qv1HxRE?si=rqh0kLehPNZlqSDn
Do you think his recent actions have harmed his legacy, or do you see them as a reflection of a player who wants to redefine chess on his own terms?