My view is different. There are more views above to give balance. If you have a condition other than diabetes for which your Doctor prescribed metformin, I agree with the advice to consult first. If your GP is a low carb GP, I would also consult first. If you are like me and hate drugs you can make your own mind up. I have not seen on this sight or read anywhere in 4 years that coming off of Metformin has caused harm - I did this, as have many others on this site; I realised going through the days that I was self regulating, when I didn't take the pill(s).
When I got off Metformin fully, my HbA1c went down, but this may have been dietary improvements / exercise as well.