Even on mobile I find the requirement for app installation to be an irritating requirement. Many of these mobile apps are much larger than they need to be, and clutter the user experience. Throw in excessive push notifications, and in many cases I would like to just go to a website for services I use infrequently.

Seriously, push notifications, requests to review the app, gratuitous permissions, ads that bypass my ad-blocker. Why would I want to do this?