I'm going to bust your chops a bit here @Coalclifff, because while I see what you're saying big-picture-wise, I do disagree about some of the the particulars.
For example, doing a camping trip is impractical for most people who fly in,
The thousands of international visitors I see camping all over the Utah National parks and more remote wildlands might differ on this count. I've personally done international trips via airplane that involved camping, last summer to Canadian Rockies, in previous years to southern Mexico and New Zealand/Fiji. It is more work, in preparation, packing and while you're traveling, and whether or not this is worth it depends a lot on what sort experience you'd like to have, and how much effort you want to expend seeking that experience. I certainly do not plan every big trip this way...for example Costa Rica in 2017 was entirely hotel- and hostel-based. And that was great too.
as is driving a rental on unsealed roads
This is a "rule" that I'd argue many on here take too seriously. I rent cars all the time and drive them on dirt roads, for various reasons including work-related. Many, many others do the same. Its actually fairly fuzzy, the limitations on what you're allowed and not allowed to do. You might be of the mind that this is taking on a foolish risk, since you'd be on the hook for any damage you cause to the car during that excursion...although honestly, no more risk than you'd assume driving your own car on a dirt road at home. Which I also do all the time.
making bookings up to a year ahead,
Why is this especially impactical for people flying in? I'm making reservatins for the Inca Trail in Peru a full 8 months in advance and would have done it sooner if the reservations were available, because that's what you have to do if you want to do that particular thing on a particular day. I guess it adds a level of complexity to travel arrangements, but if something is important enough, you just deal with it.
or entering ballots and lotteries etc for limited permits.
Most of this is now done entirely online. It doesn't matter if you're in Utah or Vermont, Auckland or Montenegro, applying for advance permits is the same for all. My friend in Dublin can apply for a backpacking permit in Grand Canyon every bit as easily as I can here in Albuquerque. Similarly, I find the permit system for the Wave to be just as impractical as any visitor from more remote lands (there is a reason I've only been there once). The only larger consideration is that your permits can bind your intinerary in irritating ways, but again, if it matter to you, you work around it.
