[lampe3]

Sounds a little bit to more like:

We are using every new technology because why not, but we don't think about our use cases.

Things like "/items/12345/detail" let me believe that this is not a spa really? More like a good old MPA?

I'm not sure if the chosen technologies are the right ones for the jobs.

In general, I don't understand the trend to default to something like reactjs. We have and had alternatives.

What I see is that people complain about technologies which are not build for what they are using. To get good performance and bundle size out of SPA like apps, you really need to put in work. Maybe a simple Laravel/RubyOnRails website would have been the better stack for a lot of projects which are right now written in reactjs/nextjs.