But still, they should have a scammer tag too.
I don't quite understand why these need to be removed. I think having those and the trust system would work fine together, the trust system can be used like normal but, the scammer tags are issued when it has been confirmed that the person scammed. What we are effectively doing it removing a layout of protection.
Obviously, you justified giving them the tag in the first place so I don't know why you would want to remove it now. Any reasons or would you just prefer to use the trust system which isn't moderate unlike the scammer tags.
The reason why is because it creates a perception problem (you seem to be affected). Nobody gets a scammer tag anymore, ever, under any circumstances. So not having a scammer tag doesn't mean someone isn't a scammer, it just means they scammed after the forum stopped giving those tags out. Essentially they are obsolete yet by remaining they are confusing.
When someone sees scammer tags this may lead someone to believe (like yourself) that they are still being used and thus not having a scammer tag is a good sign when the reality is that someone not having a scammer tag alone means nothing.
Any reasons or would you just prefer to use the trust system which isn't moderate unlike the scammer tags.
This. It isn't just prefer, they never moderate scammmer tags anymore.