The negative feedback doesn't affect your trust score. Leave 'em be.
I noticed that. I wasn't sure, and I value my reputation. Thanks for the reassurance.
gives a negative impression to me?
No, I can't say that it does. If anything you seem to wear them as a badge of honor.
Untrusted feedback doesn't show on your rating. Only someone on the default trust list placing feedback affects your trust score.
The person you placed feedback on already got tagged by Suchmoon who has DT (Default trust)
https://bitcointalk.org/index.php?topic=4610912Untrusted feedback can mean it is completely fake or that the person is not on the trust list.
Untrusted feedback is nothing to worry about unless it is true.
This is why when you place feedback make sure that:
1) Get your facts correct (which you did)
2) document them using an archive like
https://archive.org/web/ in case the post gets deleted.
3) Always use a reference for the feedback. This way the person reading it can make up their own mind. (which you did)
https://www.virustotal.com is good for checking files you don't want to load onto your computer.