Totally agree on the main point: overzealous children supervision in modern urbanistic western society has gone too far and edges on perversion.
But to nitpick on the scientific points, the analysis is incomplete.
Consider vaccination: if everybody is vaccinated, you can safely skip yours and be relatively safe; if few are vaccinated — you'd definitely want a shot.
The fact that people tend to overestimate risks when it comes to children, this very mentality flaw by itself leads to risks being low. Every little suspicion is picked up and checked.
Is it good or not? Better statistics needed, but for sure it's a balance between the 'nanny state' and 'free-roaming' extremes. And I don't see a better way for finding that balance than trial and error. You can't find thay balance by reasoning.
When you compare 204 and 359 antigens to about 3,000 to 12,000, just 30-40 years ago, that’s a huge reduction in exposure as well as additional protection against 6 more diseases! Additionally, as the antigen dose in each vaccine has decreased, there has been a corresponding drop in both the amount of preservatives in each vaccine