Seems like your only motivation on this forum is to participate on signature campaigns because you are making a big deal out of it and as i said he can join to some campaigns anyways, if he points out any reason of why he wouldnt be able to do X thing because he got that negative trust rating i would change my mind
If that was my only motive i wouldn't be here in meta pointing at things that almost noone wants to. I'm in a campaign because it's convenient. Anyways it's hypocritical of you because you're in a campaign as well.
In regards to "things he can not do" because of the -ive, you should talk with him.
cheers