Comment by legutierr

In general, this usually results in front-end logic being very tightly coupled with back-end logic. In some of the examples given, you even have database access in the same line that is generating the HTML document.

https://github.com/paveldedik/ludic/blob/main/examples/click...

It's the kind of thing that looks very cool and concise in small examples, but tends to become a nightmare when you are working on larger projects.