Plus I'm pretty sure nothing works as intended anymore. Bounty managers don't even care if their participants have red trust, and that ought to tell you something about how the system is viewed by the average user who doesn't give a flying fuck about bitcointalk.
Bounty managers do not care if a user rehashes jargons on their fake social media accounts, with dozens of fake followers and then spam the project to death without even knowing what its utility is; it's no surprise they do not care much about the trust system.
Imo, the trust system has for a long time not been used at it was intended, and many joined in (giving feedbacks and flags) to attain a status symbol, rather than to keep the forum clean, leading to what we have today.
Can it be fixed?
I do not think a perfect system exists, and any which is created would be subject to how it is used, but some changes can be made to improve it.