Basically you have ADHD/ADD if your symptoms are maladaptive to the modern environment. The modern world is increasingly being able to focus and produce.
And yet it isn't. Schools over here are less sitting in rows facing the teacher and Pay Attention, and more sitting in groups, get a laptop out, "fun" project activities. Modern workplaces - in our industry - are all about a deluge of distractions, meetings, tickets, incoming or always-on calls, side activities, incoming merge requests, Slack messages in half a dozen spaces that all need to be read or you might miss out, on top of a lot of people being open for private communications and distractions like making appointments, chatting with the home front, etc.
So no, I don't know where you live or work, but I don't agree that the modern world wants you to focus and produce.
