For anyone interested in reading more about this, the linked submission seems to be another engineer's perspective of "Uber's crazy YOLO app rewrite, from the front seat" - https://news.ycombinator.com/item?id=27267368 (which is much more in-depth, and also not a twitter thread)

Wow! What a wild ride. Thanks for linking to that story, it's fascinating to read about these types of experiences.

My former role was in web development, I've always been stunned that native apps can get away with 100+mb sizes and yet still people complain about a 3mb JS bundle.

My overall reaction is, web development seems like a MUCH better environment to code than app development. Especially with the ability to arbitrarily split and chunk JS.

This especially seems useful to separate out regional features so only those who need it download it. And of course, any code can be cached so users don't have to re-download it.