Using trust like this is wrong. However, trust system is not moderated. Unfortunately, there are many people who misuse the trust system and you can even see this in the Default Trust network. The trust system is a well-intentioned idea but poorly implemented. It would actually be better for the site if it didn't exist at all. The trust system is used for many things that have nothing to do with trading. It's full of people who abuse it for their own benefit.
You are absolutely right because I have came across post and profiles where trust system are being misused.
Most times it would be better for people who doesn't know how the trust works to be out of the system whenever it's found violated, at least from what I have read above, that the trust system is solely for handling trade risk and not for a political judgement or even self personal reasons and ideas.