The process is most definitely flawed but nothing gets done about fixing the flaws until something bad happens. Non public schools Schools had asked for more money in 2022 and 2023 for security from the state and the legislature didn't pass any bills for it. So theresls been failures across multiple levels leading up to this shooting.
Remington was making semiautomatic hunting rifles back in the 1950s. There's multiple semiautomatic rifles on the market that aren't AR platform. Using a semi auto to hunt big game isn't a new thing and most states have a magazine limit if using one to hunt. And with the AR platform you can build them to use larger calibers suitable for taking down most bigger game.
A .22 with good shot placement will definitely take down coyotes and raccoons, especially if it's a .22WMR or .22 Hornet. Prairie dogs , Nutria Beaver etc can all be taken down with small caliber weapons. People using them for varmint control arent going to be pulling the trigger willy nilly and spraying ammunition like that. Using a semiautomatic for hunting or varmint control because it makes it easier for follow up shots if you do make a bad shot.
Asking to limit guns that are used to commit mass shootings would limit pretty much every gun made. Handguns by far are used the most but the media barely reports on them. Glocks equipped with a switch, making them fully automatic, are increasingly being used but the media doesn't cover them like they do when an AR platform is used. When those shooters are caught, they are hardly ever prosecuted at the federal level and states are now having to add new laws to deal with it. Same thing with people straw buying for people who shouldn't have guns, they are rarely prosecuted despite it being a federal crime to do so.
As a fellow gun owner I agree that they are people that shouldn't be allowed to have a gun. But until they fix all the support systems in place to prevent that, sadly there will be people who get their hands on them. And you are 100% right that drawing a line in the sand without compromise isn't working but the law makers don't see that. I live in a state that has some of the strictest gun control laws on the books but when criminals get caught using guns in a crime, they are allowed to plea down to lighter sentences. The ones that suffer are the ones who actually follow the laws.