Well, my experience is the opposite: while using the new MacBook I realized how infrequent I was using the function keys. The only times that I noticed the "missing" function keys were when I tried to open up the web developer console (F12), or rename a file (F2). I did see Apple's rationale here: ordinary users won't miss them, given I, being a developer, didn't miss them either.
But unlike you and the OP, pressing the Esc key did affect me. I couldn't completely get used to the soft key even after using it for more than one month (currently). Every time I try to press Esc, I'm a bit hesitant. The inertia was higher than I expected. So I can't agree with the phrasing that "there is no justification for the apparent panic." The annoyance exists and I'm the living proof.
But unlike you and the OP, pressing the Esc key did affect me. I couldn't completely get used to the soft key even after using it for more than one month (currently). Every time I try to press Esc, I'm a bit hesitant. The inertia was higher than I expected. So I can't agree with the phrasing that "there is no justification for the apparent panic." The annoyance exists and I'm the living proof.