Here's an experiment for anyone to do if you have the means to do it. The centrifuge that Sokarul put up in the video would be ideal to use, just on a smaller scale.
Here's what you do: You get a reasonable sized chamber for evacuating air and you build a little centrifuge similar to what you see in the video, except you don't require this to need liquids...you can use plastic beads or something like that.
Just get a little motor from a toy and attach a deepish lid to it, making sure it's reasonably centralised.
Place a small handful of beads into the lid and put it inside of the chamber and set the motor in motion.
What you will find is; the beads will naturally be pushed out to edge of the lid and sort of stick to the walls of it, right? Are we clear on this so far?
So what we have here is your basic centrifuge as we are told it is, using inertia as they tell us.
Whilst the lid is still spinning, evacuate the air from the chamber and watch the beads all start to jump out. Now why would this happen you ask.
It's because there is no vortex that can build up to keep those beads stuck to the sides of the lid, so they simply drop onto the spinning flat base of the lid and be sort of flicked out or simply go tap tapping loosely around..
Anyone with the means to perform this cheap and simple experiment can prove to themselves exactly what I was trying to tell you all along.
No need for anyone to argue it with me. In fact there's not even a need for anyone to reply. Just do the experiment as I'm sure that some have the means to perform it.
If anyone is unsure about what I've just explained, I'll be happy to do you a diagram of what you need to do, if you so wish.