Why people blame lebron james for the lost to the mavericks?

im not a heat fan. i was rooting for the mavs, but why people blame lebron for the lost. its dwayne wade team. in all the games in the finals he scored 25 points or more. When they lost he only scored like 16. And lebron was just inconsistent. why is lebron the one taknig all the blame when its d wade team