All the people replying to this minimizing the concerns of the original comment need to go back and reread it. The point that really raised their hackles was the electrical issue, not insulation or overlapping rooflines.

Electricity can instantly kill you or start a fire, which could kill you and your neighbors. Look at what just happened in Boulder. Fire is dangerous, especially when combined with high winds. I personally saw that play out twice while living in Boston, one of which was determined to have been caused by sparks from unpermitted welding, the other by improper disposal of smoldering construction debris. Both small starts whipped up by winds, both times multiple people died.

The phrase I’ve heard is “regulations are written in blood.”

Also, the punishment isn’t necessarily meted out on the actual perpetrator.

That's a pretty big overstatement. For example, using insufficient insulation is a code violation, but it is not going to kill you.

Most building codes are not a life or death matter. Most of them are windowsill clearance, door clearance, minutia about the spacing of steps. In some locations you have really stupid proscriptions about load bearing structure types (so e.g. you can't use a metal frame for your house simply because they specify you must use wood).

Help me to understand who dies when the rooflines overlap?