Not OP but: spreading a UI amongst a bunch of files, which themselves have server side templating and logic in them and can't be run, imported, or tested in iso

Not OP but: spreading a UI amongst a bunch of files, which themselves have server side templating and logic in them and can't be run, imported, or tested in isolation. I was never a JS fanboy but the modern JS/TS frameworks that let you organize and test the UI without an entire system running is better for maintenance imho.