People only see this with the context that this is a youtuber doing a prank.
This man is 6 fucking 5. Imagine a random giant gets in your face, you think you’re about to be robbed or beaten. He advances. You retreat. He advances. You retreat, he advanced. Again, you retreat, he advances, all the while shoving something in your face. How many times do you need to tell someone to disengage and retreat before its okay to consider it a threat?
Just because this guy happened to be a youtuber doing a prank is irrelevant, imo.