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1b1ed1a
(Get the code!)
So the claim here is that upgrading is dangerous enough that people need to be warned against it.
I submit that nobody knows whether it is dangerous or not. Nobody has ever measured the success rate for upgrading to any version of Ubuntu. We have very little idea whether the success rate is high or low, or whether it's improving or getting worse.
It would be easy to assume that more problems posted on the forums means it's getting worse. But so far, each Ubuntu release has been installed by more people than the previous one. So it might be that the success rate is staying constant or even improving, while the number of failures reported on the forums still increases.