Different countries have different codes of practice regarding the 'offer' of metformin.
I live in Aotearoa/New Zealand, and we have the highest prescription rate of metformin in OCD countries I believe. I was certainly 'offered' it, (as in prescribed) it along with a statin by a very nice well intentioned locum doc while my regular doc was away. She would have known better than to prescribe something to me without engaging with me in a discussion, including side effects, sending me links to papers online - I know! She is a gem.
When she returned I had by then read up on cholesterol and statins, especially for those with hyperglycemia, and she accepted my desire to go the diet and exercise route without medications. She and I both have been on a very steep learning curve re type two ever since, and she is always interested in my N=1 experiments. (I know! A gem.)
Since then, I have been experimenting with metformin. (Once I was no longer in the 'intermediate hyperglycemic' range. aka 'prediabetes'.) I am unfortunately a person whose blood glucose is super affected by the covid vaccine, and it did not come back down (maybe because of the continuous nature of receiving the vaccines/boosters etc.) I am pleased to be alive and not dead from covid, but I am left dealing with my hugely affected blood glucose/metabolism. Just bad luck. (But - good luck to be alive! Don't get me wrong.)
For me, like with most? My experiments are rarely involving just one thing/line of treatment. I have done it, but it is rare. It is the same this time with the medications route.
If you do decide to take metformin (yes of course - along with your doc or diabetes specialist nurse etc etc) - my advice is to consider supplementing with COQ10 and B12. If you don't mention it to your doc at first you could see it as a test? Good doctors should be testing you for your baseline B12 before you start on metformin, and then keeping an eye on it as you progress with the med. If your doc does not, they are not up with the play, and my thought is - consider changing your doctor. (My doc did this, which is how I found out about the B12 depletion thing. I know! A gem.)