My understanding is that “the speed of light in a vacuum” isn’t really about light itself, but rather about the speed limit of cause and effect, or “information”, in our universe. Light just happens to move at that maximum speed.

In quantum mechanics, even if you can have an entangled pair (separated by long distance) collapse instantaneously, that system still couldn’t be used for instantaneous communication that exceeds the speed of light in a vacuum. (At least, that is what I have previously understood.)

I read all three articles, and didn’t find an answer to this question:

When they say “quantum teleportation of information” - The speed of that teleportation itself is still limited to C, right?

I tried to post this video directly, but it got removed. So, here is how to make your own sound-dampening baffle box for a home server:

https://youtube.com/watch?v=d0KsCrtu3jg