While they may not "worry" about the risk, they are certainly cognizant of it. Most wear helmets and gloves, many wear armor and leathers.

In the case of a NEV, it's a 4-wheel car with doors... Unless told otherwise, most drivers are going to assume they meet passenger car safety standards.

That's true, but consider the amount of extra protection a rider wears in order to mitigate risk of injury.

Worrying about the risk does not correlate with the actual risk. Funny how you picked the poster example of this.