Part of it is about Ubuntu Users too

People have been complaining that making Linux easier to use is bringing 
dumber newbies for at least a decade.  Ubuntu is only the latest target of 
such accusations.

As someone who has used Linux since 1995 (Slackware, Red Hat, Mandrake, 
Debian, Ubuntu) and has a tiny bit of code in there, I'm much happier 
having Ubuntu (well, Kubuntu) to run than dealing with something 
non-newbie-friendly like (for example) Gentoo or Slackware.

And as someone who ends up being asked for computer help by friends and 
family, I'd much rather help them if they're using Ubuntu than if they're 
using Windows.  Or Gentoo or Slackware.

Making Linux easier to use attracts more users.  This is a good thing, not 
a bad thing, because of network effects.  As users increase, benefits to 
those users increase exponentially.  When we have a measurably large 
market share, we have fewer problems getting support from hardware 
companies, software companies (yes including free software), media 
companies, and governments, all of which have made life difficult for 
Linux users in the past due to our small market share.  When the "dumb" 
users are using Linux, the "smart" users find it easier to do their own 
everyday tasks with it.