[Article author and submitter here]
> effectively forking the Debian ecosystem
The company and project were founded by a Debian user and developer, who employed and still employs a number of Debian developers, to make a version of Debian for ordinary people.
How is that a bad thing?
Ubuntu changes feed back into Debian. Debian now has the `apt` command instead of `aptitude`. It has the Ubuntu GUI tool for configuring repositories and so on. It has various bits of Ubuntu.
ISTM that this was as friendly and cooperative as a sub-project can be, and Debian has benefitted significantly from it.
I tried Debian before Ubuntu. It was hard and I didn't use it because it was too hard for me to bother.
(I used Caldera OpenLinux and then later SUSE.)
Nowadays Debian is a lot better and easier, and I reckon a lot of that is down to the Ubuntu influence.
I find it hard to see that as a bad thing.