As I understand, the main problem with native web views is that you now have to deal with all the inconsistencies of e.g. Blink vs WebKit. Also, browsers tend to be more aggressively updated, which translates to potential app breakage due to bugs or deprecated features.

With respect to Lazarus, I agree that the ecosystem around it is not exactly great. It would be interesting to see LCL ported to something more modern that is reasonably simple, cross-platform and has good tooling. E.g. Go, much as I dislike it as a language, would probably be a great fit for something like that. And Pascal being fairly conservative and easy enough to parse, I suspect you could even automate this translation for the most part.