I used to be one of those, "rims are just a big disc" people. Then I got some disc brake bikes. I have often wondered how many people who don't like disc brakes really have given them a chance. I'm not saying it will revolutionize your riding, but it's certainly at least a little better and not worth spending too much energy on. The bottom line is if the industry makes a wholesale change like this, it's not worth fighting. Just look at 26" wheeled MTB, there is just no point in holding out now unless you already have a bike that you like. But buying new, I'll just take what's on offer and ride new my bike.
It's really skewed right now that there are shortages, rim brake parts just evaporated. And it's really hard to find rims. Last time I needed one, I was lucky that someone I know had a stash.