That's awesome! I preordered. I've written one tiny browser extension once, which was really just for my own use, and I was a bit surprised at how hard it was to find anything that taught how to do it from beginning to end. The APIs were all well-documented, and there was a tutorial extension I could clone, but after that I was really left to searching through random blog posts and StackOverflow for help, since even with good documentation "what is possible in the first place" is hard to figure out. It took me a full day to write an extension to mute all tabs whose name matched a regex pattern. That's it, that's the entire extension, and I wasn't even interested in making it cross-browser. (The use case is that you pair its hotkey with an autohotkey script and then it's actually quite useful.)

Since then, I've on occasion had interest in making some other browser extensions, but I always look back to that experience & the lack of resources and just think ehhhhhh do I really want to? I'm sure I could but just how much do I care about this, and the answer has never been enough.