No, I would settle for an illogical explanation. Well, there's usually still a reason that addicts do the things they do. Why would some addicts steal from their grandmother? To fund their next fix. Why would some addicts do sexual favors in back alleys? To fund their next fix.
Was EVS already high when he started filming? If not, then he still made a conscious decision to do this. Was it a livestream and he thought he would get superchats out of it (delusional as that would be)? At least that would fall in the category of an addict funding his next fix. If, on the other hand, he was already high when he started filming, then we can truly throw all logic out the window. I just want to know what the situation was.
As I said, even Rekieta, drugged and drunk out of his mind, had the self-preservation instincts to at least go off-camera to snort his coke.