I'd argue it's OK even if your expertise does not catch up. The world goes by without you or I being perfect. It's one thing to strive to be better, but what good does it do if you are paralyzed because you question yourself at every turn?
So true. My internal goal is to get to be better than 80% of people in my specialty. I don’t claim to be smarter than the top 5% or so. I just hold onto a work ethic, YT tutorials, and search engine skills. Most people don’t think too much about what they’re doing so you can scrape past the median just by doing that.