There's the disconnect. The phantom in the system that some people aren't groking; the leap of faith. Why do (a vast minority of) the NFTs in that torrent still have value, despite the torrent existing?
Why is Disney worth $275B despite all of their movies hitting The Pirate Bay immediately upon their release?
I can Google Image search pictures of the Mona Lisa with zero effort. Thus, the original is worthless?
I'd ask detractors of the crypto/NFT movement really think critically about those questions. Not just for minutes and hours; not just for the time it takes to bash Reply and say "lol right click save as". Read up about the history of money; integrate ideas about megacorporation control over our government and economic systems, human behavior and nature, and what the concept of ownership really means.
I can't refute all the arguments against in one comment, and some are legitimate. But I'll leave you with one thought which fundamentally changed my viewpoint on NFTs: isn't it beautiful that you can right click save as on an NFT? That this system exists which, theoretically, enables creators to see compensation for their work, one consumer of that work to feel ownership/responsibility, and the population at large to enjoy it for free?