It’s not about being unique. Personally, I would be very happy if other distros started to pick up the useful customizations Ubuntu has added to its implementation of GNOME.
The Ubuntu Desktop team believes our customizations are best for our audience. We think other people would benefit from them too!
It’s not like we’re intentionally trying to obfuscate our customizations and we just are so clumsy at it that you’re able to easily thwart us.