It's sounding a bit like people are using "safety" to bolster a flimsy protectionist argument, ie you feel the regulations should be there to inflate your income.
Undue pressure? I'm pretty sure (for example) I'd feel a lot more pressure from my wife wanting to know why we weren't going to get home on time than some stranger.
Insurance? If you believe wingly's insurers aren't going to pay up even though they explicitly say they will, why would you believe any other insurance?
Inadequately trained people? How is it more safe for an "inadequately trained person" to carry a passenger they happen to know?