To be fair there was some kind of support on the PS3 with GL ES 1.0/Cg shaders as secondary API, later dropped, Wii GX(2) shaders are based on GLSL, and while Switch does support GL 4.6 and Vulkan for porting purposes, it is either Nintendo extensions spaghetti time, or rewrite in NVN, for actually taking full advantage of the hardware.