Quoted from link:
"Under new paragraph (d) of this section, e-bikes being used on roads and trails where mechanized, non-motorized use is allowed pursuant to a decision by an authorized officer will be given the same rights and privileges of a traditional, non-motorized bicycle and will be subject to all of the duties of a traditional, non-motorized bicycle. While the BLM intends for this proposed rule to increase accessibility to public lands, e-bikes would not be given special access beyond what traditional, non-motorized bicycles are allowed. For example, e-bikes would not be allowed on roads or trails or in areas where traditional, non-motorized bicycle travel is prohibited, such as in designated wilderness."
Just another box checked for the progression of technology. A bicycle tire is a bicycle tire in regards to erosion damage and yes this will increase with any added use. I have buddies in Oregon that swear by their e-bikes as they have allowed them to push deep into gated areas with extensive road systems. They pull trailers for their camp gear and also for the meat removal and are chomping at the bit to get e-bikes legalized throughout all of our public lands.
I have used standard pedal bikes to access areas that have now become closed via gate placement many, many times. While an e-bike might have made these trips easier, the tire marks on the road would have been the same. I am betting that this issue will get clarified and legalized with all of our public land agencies in the next few years.
All I know for sure is that any bike will become damn scary during the return trip down the mountain.