ode Srixon Soft Feel's, Snell Get Sum are in the 60 range not much different than a mid compression urethane. Then, it's just 2 piece vs. 3 piece by and large. For the majority of hackers who don't have skilled short iron and wedge play then spin means little and no need to play urethane covers. It's mostly perception not reality. That and brand name marketing.
Take a 50 year old and compare to a 70 year average male golfer then you may like the marshmallow. Too many are using their bias when you should be looking at the whole not just themselves. Because I am around whole gamut of golfers I see it from a lot of different perspectives. That was why the question can you under/over compress a golf ball.