This entire article is an argument against your approach here, and you're not really addressing any of its points.

Basically, your approach is easier to code, and worse to use. Bookmarks, multiple tabs, the back button, sharing URLs with others, it all becomes harder for users to do with your design. I mean feel free, because with many tech stacks it is indeed easier, but don't pretend it's not a tradeoff. It's easier and worse.