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When someone talks to you about a topic you don't want to engage in you send them a link to a 2.5 hour long video?
I mean, can't the point be made in 3m?
Unless they don't bother to watch it. Then it gets them out of your hair permanently, because they know they're supposed to watch it before hassling you about it again.
Honestly, it can be made as fast you can say 'NFTs are bullshit' but some people don't want to hear it from a friend or family member.