Thankfully, in Europe, unions have harshly fought for somewhat fair employment laws and this relationship only applies to actual work and not the whimsies of your boss.
Not to mention that the company was already monitoring keystrokes and requiring screen sharing. This indeed is some slavery mindset.
https://www.merriam-webster.com/dictionary/superior
Boss is by definition superior to your position, not in a sense better, but higher.
don’t be hoodwinked by bad analogies, or the arbitrary demands of insecure narcissists