As of next month, I’ve been using Chromebooks for 10 years however I also came to the same conclusion re: Google/ChromeOS over the summer.
Initially, I bought a Windows laptop but the keyboard layout (specifically the function keys) felt absolutely foreign, even after I wiped it and installed Debian. In retrospect, my theory is that a $500 Chromebook has worse internals but a much better keyboard/trackpad than a Windows equivalent, and that the keyboard layout is more user-friendly in a browser-first world. Eventually, I went back to my Chromebook but with a twist.
I’m biased, but since you seem like you know your way around Linux and tinkering, one suggestion that hasn’t been mentioned is that you buy a new Chromebook and turn it into a Chrultrabook (aka a Chromebook w/ ChromeOS completely wiped & replaced w/ Linux).
I’ve been running one of the last few months and it’s been an overall pleasant experience. Perhaps most important for me is that the tutorial includes keyd to reprogram the keyboard shortcuts to mirror the Chromebook layout. The community is growing and responsive, especially on the Linux side.