Same way people live with themselves working for an Ad companies that tracks people, and social media companies, and every other kind of business that is considered unethical by vast majority of people - by looking at their bank balance and being in denial about the harm they are causing.

One should look at their own employers and see if everything they are doing is ethical.

NOTE: just making a point, I don’t condone what these companies are doing

They make pills for that :)

Liability costs.

Let's not pretend almost all diabetics didn't get in that situation themselves.

1.4 million people in the us alone would disagree with you.

Type 1 diabetes has nothing to do with diet it is an autoimmune disease with genetic and possible environmental antecedents.

If you're interested in learning more about type 1 diabetes please check out:

https://www.jdrf.org/t1d-resources/about/facts

"More than 37 million Americans have diabetes (about 1 in 10), and approximately 90-95% of them have type 2 diabetes."

https://www.cdc.gov/diabetes/basics/type2.html

And it's often treatable through diet and vigorous exercise.

"A weight loss of ~15 kg, achieved by calorie restriction as part of an intensive management programme, can lead to remission of T2DM in ~80% of patients with obesity and T2DM." [ https://pubmed.ncbi.nlm.nih.gov/32690918/ ]

"A novel HIIT-protocol recruiting lower and upper body muscles efficiently improves insulin sensitivity, VO2max and body composition with intact responses in obesity and type 2 diabetes. " [ https://pubmed.ncbi.nlm.nih.gov/36387850/ ]

The caveat, is of course, "long-term weight loss maintenance is challenging."

I pray that you never have to encounter the wrong end of a System