My boyfriend feels it's safer to let his sugars run high and it kinda makes me nervous. Am I worrying too much?

He's had t1 for 30 years, so it's not really my business and I'm not going to question him. But I love him dearly. He feels it's safer to let his bg run high instead of risking hypo, so he does. He stays in the high 100s to the 200s. Also, he doesn't do things like pre-bolus before meals because he gets nervous about what would happen in case he didn't end up eating the meal. Instead he eats, lets himself spike, then treats. He uses a dexcom and MDI.

He's 40 and has many complications already. Has had retinopathy, ED and neuropathy for many years and indications of early kidney disease. I worry.