So you're suggesting people choose a device based on whether they can use Facebook on it?
I feel oh so very sorry for anyone who lives such a shallow content-consumption life.
We need to stop pretending that our addiction to smell phones and PCs is healthy, and that the rudimentary skills taught in a high school are going to produce "the next big app" or even a job.
I read that as being a choice between two video options, not as an active split between the two at the same time.
But it's combined by the user at runtime, not by canocal. The GPL allows an end users to do this.
This is a way that people kid themselves about the GPL. If the user were really porting ZFS on their own, combining the work and never distributing it, that would work. But the user isn't combining it. The Ubuntu developer is creating instructions which explicitly load the driver into the kernel. These instructions are either a link script that references the kernel, or a pre-linked dynamic module. Creating those instructions and distributing them to the user is tantamount to performing the act on the user's system, under your control rather than the user's.
To show this with an analogy, suppose you placed a bomb in the user's system which would go off when they loaded the ZFS module. But Judge, you might say, I am innocent because the victim is actually the person who set off the bomb. All I did was distribute a harmless unexploded bomb.
So, it's clear that you can perform actions that have effects later in time and at a different place that are your action rather than the user's. That is what building a dynamic module or linking scripts does.
There is also the problem that the pieces, Linux and ZFS, are probably distributed together. There is specific language in the GPL to catch that.
A lot of people don't realize what they get charged with when they violate the GPL (or any license). They don't get charged with violating the license terms. They are charged with copyright infringement, and their defense is that they have a license. So, the defense has to prove that they were in conformance with every license term.
This is another situation where I would have a pretty easy time making the programmer look bad when they are deposed.
Top Ten Things Overheard At The ANSI C Draft Committee Meetings: (7) Well, it's an excellent idea, but it would make the compilers too hard to write.