Prevention of diabetes or even of pre-diabetes is well worth the experiment. At least for folks in the US, where metabolic syndrome is hanging over the head of a huuuuuge percentage of the population.

Hiding information from people because they might misinterpret it is not a successful medical strategy, the better strategy is to educate, see if the information will be welcome, then provide the information in the context of what it means.

I wasn't technically pre-diabetic, but did have a few higher-than-expected resting glucose blood tests, and the CGM showed me that I'm actually really close to pre-diabetes.

That was the kick I needed to clean up my diet (specifically eat less), exercise 5-7 days of the week, and I'm feeling better than ever.

Anecdata, of course, but there is no single intervention that has been discovered to improve people's weight and metabolic problems in the US (except perhaps the new GLP-1 inhibitors). Adding a CGM, at least for people interested in it, can be very effective, and we should use all the tools we have to improve the population's health.

I think your approach is that giving more data to individuals so that they can be informed and make better decision about life choices. However, if we look at reality, the data is already there, without experimenting we can already get a ton of data. Then the question is have people made better decisions about their life choices. I think the answer is No.

And thus I doubt very much that with this device or devices like this, the diabetic population will be reduced. In fact, I believe it to be the opposite.