So there's a mod for Simple voice chat that adds support for Replaymod
https://www.curseforge.com/minecraft/mc-mods/replay-voice-chat
And this mod allows you to hear everyone's voice when replaying a recorded session if they have Simple voice chat installed

And there is no mod that adds ReplayMod support for Plasmo voice, so that is why I prefer still Simple voice chat more, just because it has Replaymod support.
But on the other hand, Plasmo Voice has more features and is easier to set up on a server and is better in every way in general, except the ReplayMod support.

So could there be any way to include support for ReplayMod in Plasmo voice?
That would be amazing!

ReplayMod source code: https://github.com/ReplayMod/ReplayMod

Already a thing https://modrinth.com/mod/pv-addon-replaymod/