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Remember when NFTs sold for millions of dollars? 95% of the digital collectibles are now probably worthless.
(markets.businessinsider.com)
This is a most excellent place for technology news and articles.
The use case for NFTs is to provide a bulletproof cryptographically secured registry for arbitrary content. Such as deeds or titles. Legally recognized, that would represent a marked improvement on the current system. You can have it represent digital goods also, that's just more of a toy than a useful tool.
"bulletproof"
Blockchain can be hacked, just like any other digital technology. In fact, it has already happened.
If you write smart contracts with vulnerabilities, they'll be hacked, that is not the same thing as a blockchain being hacked though. Also, smart contracts can be fully audited and provably correct, a lot of companies just half ass it. ERC721 spec (NFT) has drop-in contract code which no doubt has been audited and not hacked on its own.