@kaia
Some do have audio, but every time someone posts video with audio, I have to switch the amplifier to a different input — most of the time I do not bother and just ignore it, same reason I never listen to voice messages.
When I post videos myself and it's not a scene from some show, but something like cat being funky, I just cut the audio track myself — it's probably just me making weird noises and doesn't make the video more funny, but it does increase its size, so why keep it? 🤷