alt Hacker NewsWorse, RDNA3 and RDNA4 aren't fully supported, and probably won't be, as they only focus on chips that make them more money. If we didn't have Vulkan, every nerd in the world would demand either a Mac or an Intel with Nvidia chip. AMD keeps leaving money on the table.
Up until recently they didn't even support their cashcow Ryzen 395+ MAX properly. Idk about the argument that they only care about certain chips.