Goodone22, my first use of DMT wasn't too long ago and the change in my perspective on things before & after experiencing it is something I'm still processing months later. So far, I haven't found anything that it taught me to be "incorrect", but it wasn't revealing 2+2=5 either.
What I find is that the experience reveals my own naïveté with people and their different wirings; i.e. some people like myself prefer to be candid and bring truths to the table to deter games and manipulation, but another may be wired to conceal a truth in ways I now cannot be blind to. Does that mean I have new special insight into the truth? Not necessarily, but the new perspective puts me in a position where red flags go up in situations I may previously have been completely blind and manipulated.
From there I now have to decide if I care enough about specific scenario to get to the bottom of the truth or just let it be a red flag. I've had to learn to not let some red flags bother me and there's been some other struggles - but it is my conviction that the DMT experience has built for me a better understanding of life & people without ever feeling like "damn! it was wrong! it messed me up and led me astray!"
That's just one example, there's a lot more I've gotten from DMT, but all of it generally has this: imbibe what it teaches, feel pulse of the universe pumping desire for life and love, gain perspective from it, and simultaneously be burdened with a kind of responsibility I didn't have previously.
I hope my explanation helps - I'm guessing some drugs out there like Datura have side effects of making the user delusional, I only find DMT brings clarity, but I also don't personally classify it as a drug, it is so otherworldly.