I’ve been using Scala professionally for 3 years. I don’t know what I’m doing most of the time because we have a ton of implicites and monads and extension methods. I just know the general idea and can get where I want by reading types.
I’ve been creating a language for fun for nearly 6 years. I often don’t know what’s going on under the hood because it’s somewhat complex. I think this is normal for every language. You don’t have to know everything to be able to use it. You don’t have to write blog posts once a week about the language subtleties you found.
Self hosted Bitwarden. It has been awesome for three years, never had any problems when switching from windows to Mac and then my phone from android to iPhone.
Better than keeper and last pass. Good synchronization and more options to share passwords or notes with friends compared to Firefox password store.