Honest question: why is remix the primary example for this now? Next.js has been doing this for years and is really amazing. It seems like a ton of people had no idea this was even a problem they had until remix came along, and now remix is the savior.

Am I missing something with remix? Is there anything really novel that it does/introduces?

I don't know. I'm not very familiar with Next.js (I'd heard about it but never really looked into it much). Your response inspired me to investigate, and I found an article by a Remix founder about the differences [1]. It's obviously biased, but maybe still interesting. It looks like there was an HN submission and a bit of discussion, too.

There's a bunch of other comparisons out there, too.

[1]: https://remix.run/blog/remix-vs-next [2]: https://news.ycombinator.com/item?id=29983950