800 environment violations in service of the development of modern subterranean transportation is a utilitarian trade I'll take any day of the week.
It's not really that, it's a weird parody of "modern subterranean transportation". They could do interesting things with it, but right now it's just private roads. It isn't more efficient than a subway, it isn't more flexible, but it's likely more dangerous.
I suggest you actually look into what the the Boring Company's roads in Las Vegas actually are.
What you image as subterranean transportation isn't even what BC is striving for.
Looks at Hyperloop. Looks at London subway. Looks at NYC subway. Looks at literally any other subway Yeah, a poorly-made tunnel with cars that fit 2-3 people at a time while requiring each car to have their own driver is very modern and definitely worth environmental violations.