I’m just a bit jaded and fed up with a parenting culture / education system that focuses on rushing toward specific arbitrary milestones and memorizing lots of trivia, instead of trying to immerse little humans into a culture where skills and tools are learned through practical use and competence grows slowly over time.
E.g., in a different domain, it isn’t going to especially help anything if a kid takes their first steps at 9 months, and all of those special-purpose baby walker tools are essentially useless, but the kid who has tremendous core strength/stamina because they get lots of exercise crawling all around is going to come out ahead of average even if they don’t start walking until 14 months.
(edit) This is also why I hate standardized testing which places kids is "advanced" and "normal" (implicitly slow) classes - everyone develops at their own rates, but the system implicitly assumes that early advancement rates are indicative of future advancement rates, and it becomes a self-fulfilling prophecy.
But we didn't push it or anything - my older one was just into the endless alphabet app, and that basic desire to be an expert on something made him point it out - my younger one always to keep up with the older one. I doubt I would have forced them to do it if I wanted it as a goal - I just try to encourage them to get deep on what they're already showing an interest in at this point. And that usually just takes praising the work they put in (and not the results), and answering any questions they have.
(edit) And yeah, there's no long-term differences, as a friend said "every adult knows how to st in a toilet". I say in another comment - advancement is more a random walk than a linear progression, in adulthood as well as toddlers.