Why do so many people seem confused about what appeals to male gays? Do they not know how sexual orientation works?

I get that this is a shit post, but I am honestly confused.
What is the OP saying?
- I will translate. The OP is saying there is a distinct absence of male ass in the first pic.
  
  Yeah, I didn't understand the link between the image and the text either, thanks! 😅
  
  Ahh ok, I get it. Thank you
- Appealing to male gays vs appealing to male gaze.
  
  This is a really fucking funny joke and I am so sad I needed you to explain it.

I assume at least two variants: very effeminate men or buff and hairy/otherwise traditionally masculine men.
- Or y'know, just regular dudes.
  
  'Gay men like men' is definitely a tautology, lol.
  
  That too.

Poor Megan Fox... how far she fell.
- She definitely looks better in the lower picture.
- Omg, I never liked her acting, but she was FAR from unattractive, even if not my type.
  But God damn she's barely a manequin's type now. Wtf do celebs fuck themselves over. Same with starlight from the boys.
  
  I had to look her up. I don't get why some women seem so terrified of aging that they become something... well, not human-looking.
  At some point you'd think they'd look at older pictures and realize the procedures are not meeting expectations, but it seems they never stop trying to "fix" themselves.
  
  Saw this the other day and I hope some younger actresses can hear it. It's nice to see her aging gracefully, I think there need to be more role models for just aging.
  
  Without knowing all the facts, I've been placing the blame largely on her relationship with Machine Gun Kelly. Man, fuck that guy.
  Though I'm sure a lot of it was her own doing too.
  
  Apparently the actor playing Starlight, Erin Moriarty, has an autoimmune disease, which made her lose a lot of weight. When I look at pictures of her before and after, and also how she looks now, a couple of years after the plastic surgery allegations, I can definitely believe that it's weight loss, lighting and makeup that accounts for people's reaction to some of the photos she posted, and not plastic surgery.
  
  Imagine your whole life consists of thousands if not millions of people saying you are good looking. Suddenly, age takes it's toll and now it's only hundreds. Now the dopamine flow (a lot of) people get from admiration, is dwindling . I bet basically investing a lot of your stat points into appearance ( by luck and genes), now withering away, makes you way more determined, trying to reverse that process. Especially if you have no skill to fall back on which could outweigh your appearance "effect" but will still keep generating adoration/respect/interest by people.
- I have the same birthday as her. And Fucker Carlson. Those are the only really famous people. Very disappointing. May 16th.
  
  May the Horse be with you.
  
  RIP in Peace.

I mean... I am pansexual and no, I don't fucking know how sexuality works.
How do you determine who is "hot?" How does just looking at someone, with their clothes on, turn you on? I don't work that way. I don't get it.
I'm not attracted to men or women. I am attracted by penises and vaginas and buttholes and balls. The only thing that would make me sexually unattracted to a person, is if they have absolutely no genitalia at all and had a plastic doll crotch.
I know this isn't normal. If it was even common, I'd surely have found another person that is the same.
- I would say face and body shape. Sometimes voice. General appearance in terms of confidence and, in later stages, ability to socialize and "present" themselves.