From a medical student perspective, the issue isn't "Do I care about research?", it's "does it matter for my residency application?". Focusing only on peds here, I'm doubtful it does except for a very very few programs and I'm not sure it's a game breaker anywhere. Med students interested in peds often do public policy, social justice type work rather that lab-based research. But, I'm not sure how much these issues matter to the vast majority of programs nowadays. I doubt they care much in pediatrics about research, especially lab-based.
This is vastly different than some things like derm/ortho/NS meaning also that students need to make some relatively early decisions here about focus.
Yeah, from a medical student perspective, the number of publications needed to go into pediatrics is exactly 0. Heck, most junior attendings in pediatrics have between 0-1 publications. So it definitely doesn't matter from an application standpoint. Frankly, I'm not sure much of anything on the application really matters anymore. Step 1 is pass/fail, so outside of failing, there is little to objectively discriminate between applications. Felonies are always bad though. Most applicants instead do "service", and volunteer work, and "research" as you said is often absent or something research-adjacent, e.g. surveys about X, some sort of quality improvement whatever, and then my favorites: education and well-being.
Anyway, the "research" pipeline for pediatrics is generally nonexistent, and it's not going to get better. It's probably a bit of a self-fulfilling prophecy, though, as the NIH doesn't really like funding studies about kids, and most people who go into pediatrics couldn't care less about research. In that sense, the outcome is inevitable.
Edit: Just as an aside, the "research" in ortho/NS/derm is pathetic. I remember meeting several MD/PhDs in those fields. Naturally, I was excited because I like science so I was like "Oh, what did you study for your PhD?", thinking it was going to be in epithelial-mesenchymal transformation or something. Ya know, some sexy, TGF-beta science sh-t. And everytime, they were always like "Umm, I got it in general science and bone wizardry"... Ha.