> if you want to climb the corporate hierarchy it doesn't matter you just need empathy for your boss, so you will get nothing for getting upset when your manager and your peers sacrifice user experience for no reason.

The second half of this sentence is true for any concern not just UX: if you get emotional about your manager and peers doing [anything they consistently do as a group] under the assumption they are doing it for no reason then you have already failed to understand the culture and marginalized yourself and your growth opportunities in that environment.

The first half is a false conclusion born out of the bitterness of passion tempered by misunderstanding. It may be true that in some nepotistic hierarchies that empathy for your boss would be sufficient, but as an engineer who has made a successful career by caring deeply about UX I can assure you it's no way to live. In healthy corporate cultures promotion to higher levels depends more on broad cross-functional empathy and the ability to collaborate and have good judgement with limited depth of information.