I install Uber when I need to use it, then deinstall it after pickup. If I forget to deinstall it, Uber kindly send me a notification reminder (random text with with a percent symbol within it), to remind me to deinstall it.
I think you're thinking of the _disable_ button on preinstalled apps. this button is only available on preinstalled apps (it switches to an uninstall button for others) however the functionality is still there if you turn on adb. The relevant command is `pm disable --user ## package.name`. You can check your user number with `pm list users`, `dumpsys user|fgrep 'UserInfo{'` or a couple other ways; the package name is in the play store URL.
m.uber.com