You are right, I think there are a lot of us here so it is time for the medical community to start educating themselves. I had tons of testing, some with my now former doc the day he diagnosed me, and then in the hospital and with my current endo. I don't know my first c peptide yet, the second one confirmed me insulin dependent with a very low .25 as did my reaction to it - I think I am still producing some insulin though so that is a good sign and I'm still super sensitive to it. I also had a postive gad 96 and wieght loss and then dka etc., so they said I had an autoimmune reaction. Although my endo says he thinks this was going on for at least two years. I now found out my non fasting bg last October was 106. A little high but not anything to raise eyebrows, so I wonder about that.
I have heard of type 1 becoming insulin resistant and I hope that never happens to me.
Why did they assume you were type 2 after dka? It is much rarer to go into dka I think for type 2. Sorry they put you on that med, I hope it didn't hurt you. I was only on metformin for 1 day as it made me feel even worse- but it did lower my blood sugar bit at least temporarily.