From your post it looks like this forum is a desert for the mind, void of emotions and barren of thoughts but in reality it's not like that. I am posting what I want and where I want and was always doing that, otherwise tell me any idea why to post? Signature campaigns are the result of freedom that is on this forum.
But when someone creates sig campaign and in requirement state that you mustn't have alt account, then what's wrong with it? They run campaign with their own rules, it's not their duty to meet your requirements but if you want to be in their campaign or bounty or etc, you have to meet their requirement. Is there any job that asks you what you want to do and how much salary do you want to get in doing particular thing that you wish to do? I think no.
Don't join sig and you'll be 100% free with as many alt accounts as you wish. I have no idea why these people want to dramatize normal things.