I heard they lean into
Meme Bombadil
and portray him as some kind of super powerful wizard, which is definitely not what he is in the books.
They portray him as being able to teach the mysterious wizard man (who could he possibly be?) how to control his magic. Otherwise, he's got his own magic and is powerful enough to be able to just kind of chill and be eccentric and not feel threatened by anyone, but he is portrayed as being distinct from a wizard.
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