I had an early 2011 15" MBP that I replaced with the retina 2012 model. They aren't significantly different hardware wise. That 2011 model was and still should be pretty powerful. It has a quad-core i7 and SSD with a graphics card plenty powerful enough to drive a non-retina display. Can't remember, does this mean it won't get macOS updates either?
We're coming into a weird age where computers aren't getting much faster each year but companies are still having to obsolete older ones despite the fact that they still run fine. It's weird and seems wasteful.
Agreed...this does seem really odd and premature. I have 3x 2011 mac minis (all with SSDs) and one 2011 15" MacBook Pro, also with an SSD. They are used daily and all run exceptionally well. The performance of the latest 2016 machines is probably only around 2x better for many tasks.
It also seems odd that the 2011 15" MBPro is placed on the vintage list, but not the 2011 mac mini. They share exactly the same quad core processor range. If anything the MBPro is more powerful since it has a dedicated graphics card on board...