That's not consent, that's coercion.
You consent to lots of things by driving on public roads, yet many people's livelihoods depend on driving on public roads. It doesn't mean that the consent for driving wasn't given.
No it's not. You can quit and get a new job. If you can't immediately find a new job, you will be on unemployment and food stamps. You will literally still have food on the table.
Edit: by quit I meant don't get on the plane, resulting in being fired
I generally have a greater need to fly than to avoid being felt up. This does not mean I consent to being felt up. The fact that the Supreme Court mistakes this for consent bothers me greatly.