I know this seems kind of crazy at first look, but as far as backcountry riding goes this isn't going to change much. It'll still be legal to go on a tour, use an access gate. If they try to make that illegal, well this measure will be struck down before you can say hot potato.
If you duck a rope and get caught it could mean a steep penalty. Bummer. Easy solution is to not duck ropes, for which you are not supposed to be doing.
I don't really like this, but S&R do put themselves at considerable risk when they have to do a rescue effort. I can see where this is coming from.