Will the guy with horns and American flag on his face costume be used as fancy dress (QAnon Shaman)?

some idiot will probably use that as a Halloween custome

No, he will, justly, be used as a bad example of stupidity and gullibility.

Unlikely, he is presently under suicide watch. Him and his lawyer had been asking for a pardon, did not get one. 

ironically the muppet admires native american indians, hence the costume 

paleface speak with forked tongue

paleface kills all the buffalo

paleface steals the country

What he did is called cultural appropriation, so it might be criticised at Halloween.
He dressed as an indigenous shaman, native american indian.
But yes, I am sure people will dress like him for Halloween. 

i dont know what you are asking

Keep your eye on Party City this Autumn.  They'll probably be selling the entire ensemble.

The horned madman is Antifa, pictured numerous times with BLM prior to becoming fake Q

 Only the future will give us reliable answers friend zxjq
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