It is a tricky issue. In general the parks are being inundated with people, leading to major overcrowding, a diminished experience for all, and damage to the natural and cultural resources within the parks. That on top of the need to reduce crowding in the face of COVID have lead to timed/reserved entry at the most popular parks. If the current level of use continues, I can't see the reservation system going away. The Park Service is in an impossible situation with competing missions - to provide access to these wonders while at the same time 'preserving unimpaired the natural and cultural resources of the parks'. Reservations seem like a reasonable compromise between these competing mandates, but I do wonder if it should be on a lottery basis (like river rafting permits) as opposed to who can click the links fastest at 12:00:01 am.