Couldn't Matrix clients adopt this as well, if only as an opt-in feature? Perhaps some clients could even use it by default, and then if such a client talks to

Couldn't Matrix clients adopt this as well, if only as an opt-in feature? Perhaps some clients could even use it by default, and then if such a client talks to a different client that has the feature opt-in, it would be automatically enabled for the opt-in client, too. I imagine this would work better for Matrix due to its federated nature than it would for Signal. The sub-2 seconds latency doesn't seem that bad, if it actually offers strong anonymity at that level. I would've thought it would be more like 15-20 seconds, which would probably be useless for all but the actively under attack targets.