Ride quality is so subjective. Some people like a firm ride that feels very connected to the road. Sure-footed. Planted. Precise. Accurate. Confidence-inspiring. Interactive. They would describe this as a "good" riding vehicle. These same people would describe the handling of a 1986 Lincoln Town Car as nauseating, numb, vague, and even dangerous. Some people mistakenly interpret a solid and quiet vehicle as having a "good" ride without actually considering the vehicle's handling characteristics.
Having said that, I find the ride of all modern vehicles to be firm, loud, and harsh - including my Ridgeline. I prefer the cloud-like isolation that disappeared with large, rear-wheel drive luxury sedans (aka "land yachts") in the 80s-90s. I like soft valving, soft springs, lots of isolation dampers, and extremely light steering. There was a time when much attention was paid to make a vehicle quiet and as isolated as possible from the road. Now, the market seems to be driving that "euro" driving experience. Names like Cadillac and Buick that were once 2-ton isolation tanks have now stiffened up their steering and suspensions and tuned their exhausts for a "sporty" sound. Even on premium luxury vehicles, suspensions lean towards firm in the interest of handling.
Deep sidewalls and soft rubber compounds will help some with small modulations (i.e., course pavement and minor imperfections), but the characteristics of the "shock absorbers" will have more effect on larger modulations (i.e. potholes). Old land yachts had deep sidewalls, soft rubber, soft shock valving, linear instead of progressive rate springs, small or no stabilizer bars, and the body and frame were isolated by rubber cushions. This gave for a soft, smooth, quiet, cloud-like, comfortable ride. You could drive over a small farm animal with little or no disturbance inside the cabin. Unfortunately, these terms are polar opposites of sharp, crisp, accurate, safe, handling. Over the last 100 years, we've gone from bone-jarring to cloud-like and now we've taken a step back to somewhere in the middle as a balance between comfort and handling with the scales tipping towards one end or another depending on the vehicle.