Well not nobody.
https://steemit.com/bitcoin/@steemitguide/2017-top-list-of-b...
Moon or payments? Pick one.
https://bitinfocharts.com/comparison/bitcoin-transactionfees...
https://blockchain.info/charts/avg-confirmation-time?timespa...
https://krebsonsecurity.com/2018/01/website-glitch-let-me-ov...
Also this "nobody accepts BTC anymore" phenomenon is something artificially caused by the BTC devs. They could have increased the block size even to just twice the size and tried to figure out the real solution in the meantime, but instead they decided to be stubborn and kick out everyone who disagreed with them.
This is not a "proof" that the Bitcoin model itself has failed. It's just that one implementation has failed, and that's fine.