Voicemail and interviews mean the least work for him, the voicemails provide the subject and he can just babble his opinions for ten minutes until he has a decent length video. Interviews... half or more of the video is the other person talking so he just needs to sit there and pretend he's listening. The bulletins are BS, he's miles behind everyone on news anyway but wants to make it seem like he's still on the cutting edge of JW news.
By "ex jw activism" what he means is that he can't act liks a complete ass and not get called out on it like he's used to doing his entire life. The drain on his mental health comes from people saying he's a monster rather than kissing his fat ass and he just doesn't know how to deal with that. Pathetic useless baby.