Let's be honest here; of course they don't care as majority of them are shitposters and they are aware that they wouldn't be able to join any other signature campaign that pays in BTC.
That makes sense (although I haven't looked at who's in the Bitvest campaign), and I was kind of wondering why members would continue to wear Bitvest's signature after so many weeks of nonpayment. That seems ludicrous in my opinion; I would jump ship as soon as I realized that delays had become the norm.
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The campaign had been here for years I guess, so it's not a big deal for the users to remain as participants for a few more weeks without any payments. Lightlord gained enough trust so to let participants continue their work blindly without thinking about their payments, but like loyce described, no participant would leave for a week or two non-payments because the manager (Hhampuz before, now Cryptopreneurbrainboss) and the company (Lightlord) both are trustworthy due to consistent payments for years to their participants and there was no 'PAUSE' or 'ENDED' added to the campaign for which participants would panic and stop advertising it, so they continued.