Well, that's a problem, in my opinion. If you aren't confident enough to post an accusation from your main account, why post it from an alt? I'm not suggesting you only post accusations from your main account, I value everyone's privacy and encourage people to use alts if they have a specific privacy need for one.
Crypt0S0ul has an alt account and that has been declared publicly-
AnotherAltIt’s none of a secret. He has publicly posted that long ago.
However, a lot of people are doing this, hiding behind alt when exposing someone's alt (when they are high ranked). Because they fear to get neg tagged or maybe they don't want to make enemies.