I AM NOT SHILLING CRYPTO IN ANY WAY OKAY THANK YOU
With that out of the way, those are not intrinsic qualities of either. The fundamentals on which every shitcoin and the bored ape garbage were sold to the public are still very strong. This is like saying "online shopping is horrible" in 2004 - technically not incorrect, but very shortsighted. While the proof of work protocol (mining for it to function and who mines more is the truth) is unsustainable, proof of stake (who holds more is the truth) and mixed ones are fundamentally amazing. Imagine stablecoins pegged to indexes of international currencies. BRICS coin, for example. With smart contracts (rules built into the transaction itself) and being practically legitimate international currencies it opens up so many possibilities. Transparency and easy comparisons in payments - salaries, rents, goods and services. Immutability - you can't just whack a person and steal the deed to their house. The "chain" part of blockchain - clear history of ownership of assets, no more "I accidentally bought a stolen car/house". And eventually the contracts can be made complex enough to cover most interpersonal transactions.
And the same thing for nfts. Especially now, in the rapidly exploding era of unethical AI art, music, etc. Artists could easily sell/lease rights for their work, including for it to be a basis for generative models. It's not limited to digital products - whatever you want to to confirm ownership of can be tagged with one-way encrypted signatures baked into nfts.
So both are great technologies that can still be improved on a lot. But it's just that the ways in which they're used today are almost exclusively rugpull bubble dogshit.
I gave a number of real life use cases where it would solve real problems. There are so many more, especially "boring" ones like official documents, research, and medical records that would benefit from it tremendously. Blockchain does not equal crypto, but they complement each other really well.
What do you mean, Ethereum is pos.