God, I had to deal with a junior we hired that wanted and attempt to SPA all the forms on a intranet application form.

I struggled to explain I would now have to spend 4 hours updating dependencies, maintaining a node js pipeline and dealing with typescript all because you couldn't handle adding a new fucking single form input to a form with only 3 existing inputs, which would have taken only 3 lines of code between the HTML and C#. The cake was this is an intranet app where the entire form only gets used a few times a year at best.

That shouldn't even be web application you should have some kind of off-the-shelf CMS already in use that you can rely on for forms like that.