I also suspect there's not much reason to boil peanuts in water outside of the very specific (and delicious) snack called boiled peanuts. I can't really think of any other dish that uses them as a normal ingredient. Most of the time you'd toast them in oil for dishes or use peanut oil afaik.

In Indian Cuisine, peanuts are sometimes boiled, and are indeed delicious

Boiled peanuts are staples at baseball games in the south. They are so good.

I love boiled peanuts and I'm always tempted on roadtrips to grab some when I go through areas where they appear as gas station snacks. Usually that's when I'm down into South Carolina or farther south.

There are quite a few dishes that use peanuts as an ingredient. Satay sauce for example.

I ended up in the hospital after walking by my roommate who was washing off a knife with peanut butter on it in hot water in the sink. I just inhaled a single breath of steam and in minutes I couldn't breathe!

My first thought here would be to blame "solid" particles of peanut butter flung into the air by blasting them with a water stream, unrelated to temperature

That does sound like something that would be a real issue, but only in close proximity