TMZ TV Hot Take: John Stamos Trolled Over Bald Cap Solidarity With Dave Coulier

John Stamos is being trolled for trying to stand in solidarity with a friend battling cancer ... and we react to it all on today's edition of TMZ TV Hot Take.

Check out the clip from "TMZ Live" ... Harvey and Charles explain why John wearing a bald cap and shaving comedian Dave Coulier's head amid chemo treatments is bringing out the social media trolls.

Frankly, we think John is doing a good thing here and Dave has come out and said he's on board ... so we gotta ask:

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