My comment was not about what is reasonable for companies to run. In fact, I implied that it is reasonable for companies to run proprietary agents, because they have contracts and legal remedy through the courts if the products turn out to be malicious spyware.

My judgement is confined to what is reasonable for individuals to be asked to run in their own operating environments. Individuals lack recourse through the courts, barring some watershed law like a US GDPR with a provision for adequate liquidated damages.

I also pointed out a straightforward path if a company still wants their contractors/employees to run unaccountable proprietary crapware on the devices used to do work - purchase dedicated devices for contractors/employees to use for work, rather than expecting to get exclusive software installed on shared equipment. Coupled with an appropriate home network set up, this provides complete compartmentalization, assuming any sensors can be disabled.

(deliberate employee-hostile software, eg employee activity trackers, is out of the scope of this comment)