What about the other 95 per cent?
Yes - major UI changes can be disruptive, and for us 'tech savvy' Linux users all this stuff may be enough to drive us away to Mint, Fedora or whatever - but we'll still be using some flavour of GNU/Linux, so where's the harm?
But remember, Linux only accounts for around 5% of users. Maybe Canonical really are doing the right thing with Ubuntu. Maybe it's the other 95% that are the target audience. And when they've learned to appreciate what's on offer, they can move on to other distros if they need to.
You've got the choice, so use it.