Not US.
Never heard of 100% taxing here, what I have seen is raises and promotions ending up in a slightly smaller paycheque. Whether that’s due to other factors such as a higher misaligned bracket of state medical insurance or benefits, union fees, I’m not entirely sure, it was more of a warning to watch your first couple of paycheques after a raise.
They’ll find that most of the peeps keeping the automation from turning itself inside out are also workers, and currently not amused in many cases.