Great video Joe I've recently bought a gravel disc brake bike and to be fair I quite like it -but I still have my rim brake bike and I am going to purchase a new Dolan rim brake bike soon I've been riding them for over 40 years and love the simplicity and feel when riding.
I'm a disc brake fan, however, for summer riding on roads which are half decent, then a rim brake bike should be perfectly fine. Also, I prefer the older 'classic' geometry of bikes like the SuperSix Evo.....
Buy used then, there's thousands of dentists with their nearly unused bikes stored in their garages. Plenty of replacement parts for the next 25 years.