Whilst I'm a straight/cis/white guy, this nonetheless speaks to a lot of the reasons 40K never clicked with me as a setting:
https://medium.com/@RealDorianDawes/lets-talk-about-warhammer-40k-830b27686a6e
Making the Imperium "the good guys" is done too often & wholly rips the soul out of 40K as a setting IMO. The Imperium are absolutely fascists - they should be a rotting, horror-show broken hulk of a culture that people only cling to for fear of something worse (which is where the T'au can get really interesting).