Wringing a Wet Towel in Orbit

I have a stupid question? Obviously, that is all real and legitimate, and I'm not questioning anything about the authenticity of the video.

I do have a big question about what he did tho.....

When I read about MIR and Skylab, there is one thing that is a constant for the fears and ongoing jobs to everyone onboard. Airborne moisture gets everywhere. Since it floats in little spheres, it gets all over and behind as well as inside stuff. electronic stuff. Sensitive and very delicate 'stuffs'.

What changed in the last several years..since I was reading about MIR members almost reacting with stark terror to a ruptured bag or other accident that put liquids into the open air that way ...so it is something they can actually do by design on the ISS?

I didn't hear a vacuum running, for another crew member to suck up all the water balls, flying every which way? So...is he just that incredibly stupid, or have they radically changed technology on space stations to make instruments and wall assemblies impervious to floating water?

* Correction.. SpaceLab was "SkyLab", and my bad for forgetting the proper name...but then, I was in diapers when Skylab was orbiting earth with men inside it