It doesn't matter that you don't understand it, the idea is to get the interview over other candidates who focused solely on presenting the value they bring, and at the interview, landing the job over other candidates who are also focused solely on the value they bring.

You may not understand why hiring managers tend to avoid candidates who display non-work-related activism on their CVs, but that's just the way it is.

I have a connection on LinkedIn (garnered from the spam connect campaigns I talked about previously) that talks about his MtF transition experiences as well as the struggle to land a job. No one cares enough to do more than post "You go, girl!" and move on with their day. Good advice would be to tell this person that LinkedIn is not the place to talk about your bottom surgery, vents about potential unsympathetic employers, or your struggles to find a partner. A good hiring manager would check social media for any red flags, and this public venting is a HUGE one.