That's not true and it's a disservice to Linux.
Ubuntu will work out of the box.
So will it variants.
Probably applies to current Fedora variants as well.
Ubuntu have done really well with 'it just works'; it's the only distro that installs out of the box with the correct Broadcom driver for my Mac Mini. While I could of gone for Arch like I normally do, it was nice for a change to have an installer I can walk away from and let it do its thing and come back to a working machine.
I have a Asus laptop here, that was bought with Linux support and Ubuntu had its share of issues with the wlan card.
To this day still doesn't take advantage of AMD GPU as it should.
Depends on your hardware.
Fedora is great out of the box. Unless you want to use something other than GNOME 3. Or play MP3s.