Sure, your warning is valid. Loosing one's job because of challenging the status quo is one of the ways to keep society backwards and an ace up the sleeve of those who feel threatened by moving forward, i.e. away from the Caves.

There's a funny story about 5 monkeys in a cage.

OTOH, I never understood why a worker will risk sanity or health for pleasing (=making profit for) an employer who constraints them in such a way that work is impossible. Many posts in PM are along the motif: my system/sysadmin does not allow X, how to circumvent? . I am a sympathiser what can I say?

This has nothing to do with employers preventing people from achieving their jobs, or 'constraining' staff for no good reason. In many environments there are all sorts of legal and regulatory compliance issues that require such restrictions to be in place by default. Advising people just to circumvent such things which have clearly been put in place for a reason, when there are likely processes in place to grant access to those who should have it, is not good advice.