I started medication as an adult, lived in a home with two involved & present parents, never saw any doctor about ADHD until I was an adult, and was never an unhappy child.
Looking back, I clearly had ADHD, but since it's a condition that's unique and specific symptoms vary per person, I just happened to have mechanisms that worked and got lucky with how my brain patterns fit into school from Elementary - High School.
I had plenty of outdoor activity, and plenty of video games / computer use. Not that you mentioned it, but I also read fantasy/sci-fi books like they were daily papers, finished all of my incomplete homework in the morning while waiting for class to start, and was constantly multi-tasking in class (reading, doing homework for an upcoming class, or occasionally fidgeting).
My sample size is 1, but I have 4-5 diagnosed (either as kids or adults) close friends with similar stories.
Your comment takes some generally-well-known positive advice (exercise more, social interaction & supportive relationships are good, parenting kids is a big task that takes time & effort), and identifies some real problems we face today (social isolation, a lack of non-religious adult organizations, sedentary lifestyles) and uses it to disparage people with real, diagnosable conditions, and vilifying those who turn to medication for it.
I'm fine with how my life worked out, but I can't imagine being the kind of kid whose ADHD manifested in a different way that made school exponentially harder than it was for me, and being told that life-changing medicine, that let me participate in school or work just like everyone else does, is something I was given by mistake, or that I just had shit parents or should have played outside more.