It's kind of funny, but also holding someone's hand does not mean you are sexually attracted to them. It's kind of heteronormative assuming someone is homosexual because they hold the hand of someone of the same sex. Don't impose your norms of self expression to others...
I think it's just an old Soviet statue commemorating troops of WW2, so no one in particular, probably.
But it's quite clear that they were c o m r a d e s. Maybe even roommates. Wh-what if we held hands and shared a post-war khrushchevka? Jk jk! Unless...? 😳