Are you proposing that my management should be able to see my chat messages and email ad hoc and without approval or assistance from IT, legal, or their management? That seems bonkers to me.
It means for example being systematically in cc for mail exchanged and being in every teams discord channel. The new social contract when working remotely is "you (the manager) can't look over my shoulder to see if I'm working correctly so I (the employee) need to show proofs of communication instead".
I've seen too many juniors working remotely that just don't communicate on their day-to-day work, and completely blindside their manager/coworkers which understandably freaks out.
There are many ways to resolve these problems without resorting to spying on messages. In an in-person situation with a conflict, there may be no record. We know methods to resolve these conflicts, so I don't understand why people go immediately to "employers control the data so they can just use it."