What does good grammar have to do with trust?
Ultimately if that's the question you're asking, then I would say those two things shouldn't have much to do with each other--but I have a hard time believing Theymos didn't consider the issue when he made the most recent changes to the DT system. I also don't think he wouldn't realize who he'd be putting on or removing from DT1 when he made those changes, e.g., Lauda on, OgNasty off. Don't know anything about Theymos, but he seems like an engineer trying to optimize a system with what he has to work with. Unfortunately all of the parts don't quite fit all together perfectly, and the result is what we have today with the trust system.
I'd be interested to hear what Theymos has to say about Cobra's input on the matter (don't know how to make the Greek symbol in his username). I suspect to a somewhat neutral 3rd party it does look like madness going on and I can see the desire to just scrap the system entirely--but I don't know if that's a great idea or not. I'll have to check to see if Theymos replied or not.
Anyway, it's not about grammar. People do earn merits on local boards, and members do earn merits even if they write horribly broken English if the posts are helpful enough.