I wrote a tutorial on making a web app and I have some thoughts in general about rust in the final chapter.

https://dev.to/krowemoh/a-web-app-in-rust-17-conclusion-1njd

For the most part you could replace most things with rust but you'll be rolling your own solutions for things that other frameworks already supply. Actix was great to use and has enough middleware that I feel comfortable using it.

I don't see any reason outside of desire though to use rust and actix, python and flask are basically the same thing but easier to write. Luckily I like the language and it is fun so for now I'll continue using it.

It could be rust will be better once you have business logic where the borrow checker could really shine, just making a simple crud is too much glue work such that any programming language would work.