Icing is no joke. Problem is when you have that capable of an aircraft you'd be damned if a little icing PIREP in the northeast is gonna stop you from pressing ahead. That no-go stuff is for the piston prop jobs. Turns out, it's not. That hurts the go, when you're paying top dollar for your conveyance, as opposed to my relatively minor flying expenditure for lesser equipment by comparison.
Just like having an IR, having a higher performance craft complicates the decision matrix because it exposes you to challenges you'd be much quicker to be dissuaded by when flying self-admitted lower performing airplanes.
That whole business of leveling off in the teens and watching the show as if all is good while you wait for that ATC guy to stretch and refill his coffee, because I have a turbine up front after all, is a little too non-chalant for my taste.
And to address the rich pilot angle, actually on this one I'll give the rich pilot a pass. I think a poor piston prop job pilot would have pooched it in similar manner, normalizing for the fact the poor pilot aircraft most likely would have not gotten to the teens in the first place.
We as pilots are notorious to reacting in a manner that saves us face, even if it costs us our lives. You have to be willing to break regs and bend metal in order to save your life. I've seen it [responding gingerly to dire situations] done by military pilots, airline pilots and recreational pilots alike. That response is pretty inelastic among pilot classes.