No. Planned obsolescence is what Apple does, when they drop support after 3 years to force you to spend thousands of dollars to buy a new Mac or iPhone. Pascal will have had 10 years of support by the time the last driver drops, and Maxwell will have had even more than that. 10+ years of support is more than reasonable. Forever support is not practical for either the company, or the consumer.
Yes. Its planned obsolescence, even at 10 years. To be fair, your pointing at Apple is a good example too. However,
We have entered a new era where GPU companies (this being AMD and Intel) have open source graphics drivers. If nothing else only on the Linux side. So then the GPU driver has three phases:
1) The active period where massive amounts of investment is put into "the item", that is, the GPU driver. (this is probably a 3 year period but YMMV)
2) The legacy period. "The item" receives minimal new features but priority for security and stability upgrades.
In planned obsolescence, you get the two, and then you're kicked to the curb like garbage. Without planned obsolescence there is what that third period looks like:
3) "the item" passes out of value for the company, but remains
in value for the customer. And all of that decade's worth of work that the company put into "the item" during phases 1 and 2 remain accessible to the customer because the driver was always open source from day one. Maybe, even, the customer is capable enough of making code updates to "the item" so there is still future proofing to be made. But even if not, the driver can be re-compiled using the sources so that it is portable to future operating systems or even CPU architectures that the original manufacturer either didn't care to work on or timing wise it was just barely starting up during the beginning of the legacy period so it was de-scoped and this is not a knock on the manufacturer - it's just market timing.
Maybe you don't fully understand what planned obsolescence actually means?
It's not just a silo look at the driver itself. It's the infrastructure around the GPU driver as well.
You see, that third phase allows a user to continue to leverage their hardware investment if they so choose to do that. And. They get to do said leveraging with mature code instead of being force to write a GPU driver from scratch which is an extraordinarily complex thing to do particularly if a company refuses to release reference material to do the driver writing properly.
A user can of course purchase a new GPU after 5 years and phase 3 may never matter to them. Likewise someone who buys GPUs every two years doesn't have a care in the world about planned obsolescence. Heck they might even be Mac users.