This is false and insulting to people who earned real degrees.
He has an honorary doctorate. Which is about as worthless as if someone had the local trophy shoppe mint you a plaque that said "World's Greatest Hacker".
No, but at least in the US, they're often given out for things other than achievement in a particular field, like as unofficial quid-pro-quo for large donations to the university.
Perhaps that doesn't damn the practice entirely, as many are awarded for extraordinary contributions, but it does add an unfortunate extra step, having to ask the question, "did this person get this honor because they did amazing things, or because they paid amazing sums?"
A honorary doctorate is to a doctorate as a honorary citizenship is to a citizenship. It does not imply any rights or qualifications and trying to pass it of as the real deal may be (and in some places is quite explicitly) considered fraud.
Honorary doctorates are created for this cases, when the recipient is --the-- expert in the field. Is a shortcut to encourage this experts to became teachers and pass their knowledge. Win-win. Do we really think that somebody spending four years writing a these about emacs knows more than Stallman about a program that he developped since 70's?
Is abused to groom donors? Yes, Sometimes is abused, but is a perfectly legit way to became a doctor.