I was just recently diagnosed with ADHD at 34 years old, and medication has had a huge impact on my whole life. While it has increased productivity while at my job, I’ve also been able to complete more personal projects in my free time. A properly working executive function is extremely important in all aspects of life. I’d continue to medicate even if I was living in a Startrek esque socialist utopia. I agree that ADHD can often be over diagnosed, but for those of us who are correctly diagnosed, treatment is lifechanging.
I also use keepassxc with syncthing. It works great and syncthing allows me to sync any other files I want. Mines set to automatically sync my photos and documents as well as keepass.