Why Would A Male Cat Allow A Male Kitten To Suck On Its Nipple?

Is it a way to get the kitten accustomed to being suckled?

Why do people not react when small boys are kissing or hugging women, but will freak out if they see little boys who are doing the same thing with each other. Also why is there a double standard for males and females. Is this common in your countries? I’m from Argentina and I have never seen something like that here. Why would society make such a big deal about one gender touching another’s body parts, but not care at all about them doing it between each other as long as its two heterosexuals or two homosexuals. Does this happen anywhere else too? Like I said before i’ve never seen anything like that in my country so im just curious now