>>281652506
Did you even read that wiki link, mechanical counterpressure suits have been vacuum tested and they work. That's the great thing about testing shit your opinion doesn't matter.

Link again: https://en.wikipedia.org/wiki/Mechanical_counterpressure_suit

I will believe NASA and JPL engineers over a random man on the internet in regards to what works and what does not in spacesuits.

Pictured: actual prototype suit.