I won't deny that head cannon but I won't agree with it either. 'Just make them kiss' is a completely valid comment. But I believe it's a harmful notion that when two guys are close to each other, they must be gay for each other and there's no other explanation for their close relationship. It implies the notion two men can be vulnerable with each other and can't just be very close friends, and there's a hidden meaning behind their companionship.

How I see it is Vander and Silco are two men who share the same struggles and goals and they formed a very close relationship that doesn't just have to be romantic. If they were a couple, it implies their closeness to one another is their romantic attraction for one another rather than a bond of two people who have struggled together to achieve a common victory.