I don't like it. That person is obligating me to ride for them or possibly put myself at risk when they crash into me if I do something unacceptable to a drafter behind. Announce yourself and give me the option to ride for you or be willing to take all risks including anything happening to me from your presence.

My view - unless there is agreement by both parties to suspend the law, the law should apply. Tailgating to the tune of 24 inches or less is illegal in most states. It is here in Oregon.