Would you rather they get banned, and be forced to make a new account so nobody knows who they are or their history?
I wish it weren't necessary either, but nobody wants the forum full of bots that just copy google answers. It's a discussion forum.
No they don't.
Arent they doing it anyways? They are, some of them have 10 alt accounts and counting so im not really sure about that point, id rather prefer them to get banned as soon as they are found scammers and as soon as one of their alt accounts are found, obviously with solid proof, i know its not a solution but at least you make them suffer a little
I didnt understand your point, why do you think scammers would only take steps to not be identified with their alt accounts only after they get banned if they are given negative trust rating they already have to do something about it, my idea simply means that you will make them suffer a little, it doesnt make it worse