PDF fetishism and blindly disliking HTML because it's associated with the current web is such an old trope. HTML and CSS are good at making hypertext documents, they are in fact much better at that than at making applications, despite that being the most popular use case lately.
No one is making you write web apps, websites are still first class citizens for web browsers.
No one is making you write web apps, websites are still first class citizens for web browsers.