It's not just speaking audio, but randomly people talking something without muting their mics, noise popping up, multiple mics at the same time resulting in ech

It's not just speaking audio, but randomly people talking something without muting their mics, noise popping up, multiple mics at the same time resulting in echoes. I mean, It's Congress still they can't manage to mute everyone and then have an operator only unmute someone when they are required to speak? on the other hand, It's also shocking that people aren't familiar that Muting Mic is a good practice.