That is an insanely bad look for that employer. This kind of invasive employee monitoring is treating people like property rather than as human beings. The problem is that the power dynamic between employers and employees in many countries is such that they can make the most outrageous demands and people will have to comply because there is always another person ready to step into their shoes.
"This kind of invasive employee monitoring is treating people like property rather than as human beings."
Exposing employment for what it is.
For that employer, it's going to be normal, and employees won't be looking. In the USA, managment dictates all terms of employment, take it or leave it.
And from that point, many companies sink like a rock as they can not retain the people able to work unsupervised and only keep the meek that need instructions for even going to the bathroom.
If the people fired had years of experience in the job and the new people hired don't, the company lose talent. Is bleeding money in an endless loop of training people just to let them go soon after that, has trained somebody to nurture their competitors, and some of this people could even make new companies out of spite and compete with their former boss.