I said as much: it's not inapplicable, just insensitive.
TL;DR: I am letting you know how this example made me feel. Take it any way you want.
It's so much easier for me to process any realist take on something that may have concerned my own health or my parents' health (we've all had serious health conditions), but shouts of the crowd "hey, we are empathizing" when it comes to premature babies makes me gulp (and my kid is doing great: what about those whose isn't?). Why don't we use kids with serious, life threatening conditions as examples too? Because those examples are too emotionally taxing.
It exactly feels like coming from someone who has not had a premature baby (or had a low risk one, as >80% of them are: babies coming out at 36 or even 33 weeks of gestation have a very low risk of any developmental issues and have high chances of survival, yet are still called "premature" — their parents are unlikely to have heard phrases like "it's so-and-so, you probably understand what this means" or "may become blind in a matter of days/hours", even though they've experienced a lot of psychological stress too).
If the goal is to trigger an emotional response, I think this is the wrong one. If the goal is to trigger a rational response, then anybody with a first-hand experience is going to have a hard time.
I am simply calling it out as I see it: find a better example, please.