He has stuff to do, he also does DJ-ing and has his own studio. We just don't get to hear much because his fanclub is Japanese only. I got this from a Heath fan group
There is no date so I don't know how old that is. If he had facebook or Instagram, we would get to see what he does outside of X but he is not the limelight type of guy. If Toshi didn't have SNS channels, we wouldn't know what he does in X downtime, either (like this radio thing, we would have never heard of it, because there was no English language release...)