Crypto won’t scale
And yet every year, for 15 years, the transaction capacity has continued to increase. Networking protocols (TCP/IP, SMTP, etc) also didn't scale to "internet scale" in the first 15 years. They just kept adding new layers to the stack and optimizing it until it did. Just like Bitcoin added Lightning, Taproot, etc to improve scaling.
In the last two months, Nostr users alone (decentralized twitter clone like Mastodon) sent each other 2.6 million tips (individual transactions) over Bitcoin lightning. None of that requires an on-chain transaction, none of it required high fees. It works. It scales. It continues to improve. Lightning has capacity for trillions more transactions because capacity is not tied to chain space.
Also bitcoin isn’t even private and you are basically shouting to the world every time you make a payment.
Bitcoin is pseudonymous. If you make a wallet, nobody knows you own that wallet unless you tell them (or a third party like an exchange), but the balance and transactions on-chain are visible. There are ways to make your transactions more private, like coinjoin, you can have multiple addresses with multiple coins.
With lightning, transactions are opaque except to you and any nodes you route through, because lightning transactions don't go on chain. This also means nobody knows your current balance. If you make a transaction between two lightning nodes that share a channel, nobody knows that transaction was made outside of those two nodes. Privacy continues to improve, see BOLT 12 for the latest upgrades in this area.
Doesn't answer your question directly, but nostr is working on this. Nostr is an open protocol like ActivityPub (which underlies Mastodon and Lemmy). Its main use is as a twitter clone right now, but it also has a very new reddit clone and can theoretically support videos as well. And you can choose your own algorithm. Here's all the choices I get from one of their clients, and there's dozens of nostr clients to choose from. The cool thing is that anybody can make and publish an algorithm and you can subscribe to any algorithm. Your client does all the sorting locally.