The install app will just open it in Brave, it won’t install the Amazon app. I know it is a bit confusing. But instead of it directly being opened in brave, it will be kinda opened with the background being Brave. So like even if you close Brave, the installed Amazon brave app will still be in recents just like any other app
If I open amazon by the URL, I get accass to the full Brave UI. If I open the “installed” amazon – i.e. what is presented after I select “install the app” – the Brave UI is hidden, and I have no access to features such as “display desktop site”.
I have an immense dislike of sites that hijack the browser interface, and browsers that facilitate it.