The Colorado Sun article linked by the OP states that Bill 1066 proposes that no fences be erected within 5 ft of corners so as to allow for public crossing. However there is no mention of that in the actual Bill, only that within 4 ft of the corner there shall not be a fence or structure
taller than 54 inches. It seems like most people skimmed the Sun article but didn't read the actual bill summary. The Sun article appears to be incorrect about that. Landowners would not have to remove fences, they just can't put up tall ones or barriers that would prevent crossing from occurring.
People can use "mechanical" means (ladders) to cross at the corners but wheelchairs would be the only "vehicle" allowed to cross. There is no mention of being ADA accessible so if you can figure out a way to get your handicapped uncle and his wheelchair over a 54 inch tall fence he can go hunting.
Here is the original thread with link to the Bill.
A bill has been introduced regarding corner crossing in Colorado The bill can be seen and tracked here. (I’m not sure it will survive) https://leg.colorado.gov/bills/hb23-1066
rokslide.com