Although I empathize your experience towards the recent event but sadly you voluntary agree on this kind of prank by joining his signature campaign because of his written rules quoted below.
▶️ I reserve the full right to add/remove any participants, push/cancel/reopen the campaign, or edit any rules of this campaign
We are all joining on signature campaign to earn for our post and it’s normal to chase a campaign with high pay rate. This prank is just brutal because it was timing to the recent competition for the signature campaign just to scoop ex-Chipmixer participants.
You will not get any negative feedback by just stating your mere honest opinion towards your BM. And I doubt that he will removed with this kind opinion. I knew that there will be some repercussions on pulling that kind of prank.
BTW, Joining a too good to be true high pay rate campaign on April fools day is really hilarious.