Calls are implemented differently across clients, threads only sometimes work. And, apparently from your comment, there's only ever going to be one encryption algorithm, because cryptography is a solved problem now?..
> And, apparently from your comment, there's only ever going to be one encryption algorithm, because cryptography is a solved problem now?..
That's not from my comment. If there will be another one it likely will be integrated into THE specification such that it will NOT divide the ecosystem into "I prefer MEGOLM" and "I prefer to implement new thing".