You can create zero compression zips in Windows Explorer. It's probably the most common use-case for their "create" step (people just creating a quick zip to send projects, etc to each other).
But yes, if you specifically want a tarball you'll still need tar.
Don’t forget the need to send “naughty” files through corporate email. If you attach a .py/.bat/must-be-a-virus-extension, the entire message can get silently blocked. Compressing it with a trivial password can be mandatory.
But yes, if you specifically want a tarball you'll still need tar.