Why? The feedback lightlord left doesn't look terrible and certainly not abusive.
Because people are not being excluded from DT just because of their abusive feedback, but it's my personal opinion and I see that other members excluded him also.
Lightlord has nothing to do with the spam, that's 100% on the manager and participants. That's why there is a manager, although everyone has a different idea of what is considered spam. Best thing users can do is report posts and hurt spammers by getting them banned. As far as the trust list goes, I really see nothing wrong there, just because a forum mod doesn't trust his is not a reason to halt a campaign. Long as he pays regularly and on time he's fine. Just goes back to respecting people.
He is indirectly connected with spam, because he hired the manager and he made those low payment rates, so much that seeing these avatars and signature you mostly expect to see some low quality posts.
Last time I checked those campaigns are not active anymore but I don't really care what happens with them if they are operated in similar way like before, with or without l-lord.
Note that I have many ignored members even from much higher paying campaigns, so it's not a universal rule.
Over the short run, it is the campaign managers responsibility to prevent lots of crap posts coming from the campaign. However, if over long periods of time, if a manager allows lots of shit posts, and doesn’t do anything about it, it will reflect negatively on the person who didn’t fire the campaign manager in favor of someone who would address the shit posts.