Yeah, no thanks. I want to use my browser’s standard keyboard shortcut to navigate back. And also forward again. And I want to be able to inspect the history listing before I go back or forward.
Let the browser do the browsery things. Don’t make SPAs suck even more than they already do.
So when you use a desktop app there is no back button but there is a switch to another app shortcut. Same idea.
There are desktop apps that do provide a navigation history (for example file managers, editors, chat apps), and they generally use the same keyboard and mouse operations as browsers for that. The point is that when an SPA does provide that within a browser, then the user shouldn’t suddenly have to use bespoke UI operations for it.