Reading your entire comment, but especially this sentence makes my blood boil.
None of this is backed up by science and you provide no sources.
This is the equivalent to flat earthers explaining how the universe works or anti-vaxxers how thoughts cure disease.
The OPPOSITE is true: Medication, especially given during age when neuroplasticity is still high can have the best long term effects on neurological development and avoid many adverse life effects normally associated with untreated ADHD such as substance abuse and risky behavior.
Sources:
https://www.additudemag.com/long-term-effects-of-adhd-medica...
https://childmind.org/article/will-adhd-medication-change-my...
And about a dozen more if you google for 10 minutes.
All typical medication used for treating ADHD has been around for decades with mountains of clinical data.