It's true, it's not fair for those who work for weeks.
Work for weeks on some shitcoin project? Nah, those guys should know better what t promote and what not to. They are a part of this forum and they need to know the things that go on the forum. Otherwise they are just being selfish.
But these rules will still apply so that all participants can better support the project to completion. In my opinion, there are a number of campaign managers who give participants to their signature campaigns the opportunity to remove their signatures but must be reported in advance. Without reporting, all bets will also be deleted. I think this is fair enough for participants.
Depends on individual projects as per the decision of the team. Most of the time when the funding for the project is going badly you will see such measures of forcing people to wear signatures. You can get the hint that the project would not be able to reach a good cap and so its better to exit and consider the money you expected to get as lost. Those tokens anyway are worthless so dont waste time on them but develop your own skills and go for bitcoin payment campaigns.