You're pandering to the "I hate crypto crowd"; you could have asked this on another forum if you wanted a good-faith answer. From my POV the killer-app of crypto is a USD stablecoin. Argentina's currency is collapsing the 3rd time in like 50 years (40% inflation?). There are other financial instruments beyond the dollar that could be tokenized (US Treasuries?), but most of the world would be happy to more-or-less preserve their purchasing power. They will find some vehicle to approximate the perservation of wealth, whether it's mobile phone minutes (an early digital store of value), physical $20-bills or something else.

Non-financial use cases would rely on a blockchain's tamper-resistance: like timestamp hashes for proof that a video happened at a certain time (only useful if this video is alleged to be faked), or something like NameCoin which was a tamper-resistant DNS prototype. Some people are trying to implement digital identity with blockchains, and others are trying to build a social layer in such a way where you own your 'social/friend network' and can view it with any ux you choose.

I think basically all of the marketing-hucksters have rotated into AI (IBM is running ads for AI, not blockchains), so the hype is muted compared to 2017 or so.