We should probably insist that all campaign managers present transparent clear rules that can be applied to all members.
The vast majority of signature campaigns quite clearly state their rules in the opening post, and those rules frequently contain a clause about no alt accounts.
They should also be able to detail why a person was excluded or accepted with their own examples.
You can be hired and fired in the real world without giving reasons or examples. Why should campaigns for trash tokens be held to a higher standard?
The only people you will find claiming there needs be no transparent clear rules applied to all members ARE THOSE ON THOSE HIGHLY PAID SIG CAMPAIGNS. They do not want fair competition.
If I did not want fair competition, then surely I would be arguing
for alt accounts so I could try to get my alts on to ChipMixer as well?
The bottom line is an individual or company who is hiring people to perform a task is allowed to set the rules of that employment. If you don't like those rules, don't apply.