"I feel that Canonical as a corporate entity is a poor example of a corporate citizen of the larger ecosystem of open development and is exhibiting behaviours that negatively impact sustainability of that larger ecosystem."
So you think that because Ubuntu does not contribute as much to upstream as some other distros do, they are threatening the viability of the entire ecosystem? I'm sorry, but that does not compute. They are not actively harming the ecosystem, what they MIGHT be doing at worst is that they are not actively benefiting it.
But, OTOH, I think that Ubuntu does have a positive contribution. They have increased mindshare of Linux and various projects associated with it. They have brought more users to Linux. And all those are positive things.
There are ways of helping Linux that do not involve patches. As long as we think that "only way to help is to submit patches!", Linux will be doomed to a niche. The ecosystem is not just code.
"I point out those specific behaviours which need to be addressed. I will continue until those specific behaviours change."
In other words: "I'm annoyed because Ubuntu is threatening the popularity of Fedora, and I'll vent my anger and frustration in lwn.net!".
Pretty sad, really. And what's even sadder is the fact that everyone else that read lwn.net needs to suffer your endless whining.