Then please help me out what is your point?
I only see only mentioning old SDK and a list of drivers for several cards.
There are 3 types of drivers from AMD: RDNA, Polaris/Vega and Legacy.
While the GTX750 is still supported in current drivers, but the GTX740 (though same 700-series) gets security updates.
Intel is doing a similar "stunt" and supports the 7-10th generation of HD Graphics (>Kablake) only with security updates, the 6th generation (<Skykake) is not supported at all anymore.