Beginner's bike? At 110 HP, 465 lbs and $13-15k pricing? I think not. What you are hearing is "ego talk", those who think anything less than a 200 HP superbike is for wimps. Most of those who belittle bikes like the SS can't ride their superbikes anywhere near their potential, and that's much more common in superbikes than supercars.
There is an argument for a single purchase, such as the Supersport, that lets a rider grow in their abilities.
Let's face it, who wants to buy a 250, then a 600, before graduating to the 'big' bike you always wanted. Back in the seventies, you could learn on a K series 750 Honda, a Z1. No restrictions.
Then they decided to place restrictions and the 250 two-strokes were born. RZ, RG, KR... I digress.
But you're right about people buying superbikes, that they are totally unable to get the most (or even a small part of it) out of. It cracks me up to see a superbike with the centre tread worn flat and chicken strips so wide you wonder if the bike was only used in a straight line. You see it with high-end cars as well. I can tell you stories about following Porsches in a pushrod engined V8 ute and seeing the back of the Porsche step out because the driver thought to have a Porsche made them a Senna but they had no idea how to drive.
When anyone starts banging on (and on) about maximum HP and top speed I leave them to it. When people talk about torque, damping, clearance and the like I'll listen. Much the same as most who frequent this forum.