I've been doing web programming for about 25 years, starting with PHP and MySQL in, oh, about 1997. I wound up doing a LOT of PHP work, some ASP, and then lots and lots of Rails. What I'm trying to say is that I am INTIMATELY familiar with everything that a web app does, in every layer.

A few years ago, in a previous role, I was forced to use Java to start a new web app. I spent a couple months reading up on things, and trying to find a comprehensive example of a CRUD app in Java/Spring/React. I finally admitted defeat, and corresponded directly with the author of JHipster, and he pointed me to an example he had on GitHub, which had never come up in searches, but, unfortunately, was so out of it date, the code wouldn't work in modern versions of the stack. However, I finally cobbled together a working "show" page with nested objects, as ANY real-world web app will need to do. At this point, I again got stuck at trying to figure out how to update nested objects in a form.

As a mental exercise, I rewrote everything I had done in 6 months in Java/JS in Rails in 2 days. These 2 lines of Rails...

    class BankAccount < ApplicationRecord
        self.table_name = 'offer'
        belongs_to :owner
    end

... represented over 250 lines of Java/Spring/JS. A lot of people around here hate that Rails is "doing so much for you," but do I really care to write every line of code required to define the relationship between BankAccount and Owner to the compiler, when it's a simple many-to-many connection implied by a foreign key?

I found another job.

P.S. There's a lot of talk on this forum about Typescript and how great it is, but very often in my months of trying to write this application, I couldn't get the types to line up through the stack, and just had to use generics.