Pixel 4a user here: I haven't played with the default launcher, but you can absolutely get rid of it with other launchers (as many sibling comments noted). As

Pixel 4a user here: I haven't played with the default launcher, but you can absolutely get rid of it with other launchers (as many sibling comments noted). As for the chrome//android web view, you can disable the chrome app and 99% of apps that use android web view have an escape hatch option to just open it in your default browser, so that's also a non issue.