If 99% of Bitcoin's hashrate gets taken off the internet, it keeps going without any problem. That's the beauty of a decentralized cryptocurrency. There's no central node and it's supremely fault tolerant.

Algorand has a lot of interesting technology and may have some use cases. But it's more like a distributed database / voting system than a true cryptocurrency.

That is not true. If network partitions happen in bitcoin you are utterly ducked. The system will fork and good luck to recover from that with all the double spendings.