The problem with that outlook is:
1. Law enforcement can learn the skills. They do it for all field police officers that may eventually end up in a car chase. With a little practice, they become at least as proficient as the crooks they are chasing. They don't hesitate to do so on our highways, which are full of innocent "bystanders". Why should they hesitate in the backcountry or rural areas?
2. Law Enforcement has the very same machines available to them, and many officers would jump at the chance to use them while on duty.
3. Law Enforcement currently takes far more risk when they chase motorists on our highways, especially when they do so on two wheels. A broken leg from a crash on a dirtbike is much different than a dead officer from a rollover at 100 mph.
4. The fact that most departments don't currently have the skill or the equipment to enforce the law has never been a valid excuse for not enforcing the law in any other venue. Why should it be acceptable here? It's an excuse used by anti-OHVers for a decade now. "We can't enforce the current laws, so we need more laws". Is that logical? Certainly not to me.