Earlier quoted context omitted.
Which GPU do you have? According to https://mesamatrix.net the radeonsi driver for GCN and RDNA cards supports OpenGL 4.6 (the latest), and the r600 driver for older TeraScale cards supports 4.5.
Which given my hint about FXGLR doesn't do me much good. https://www.techpowerup.com/gpu-specs/radeon-hd-6310-igp.c22... With fxglr, I enjoyed OpenGL 4.1, hardware video decoding, even though as you see from the specs, it can do more than that on Windows. With the wonderful open source driver, I get OpenGL 3.1 without hardware video acceleration.
Regardless, the problem is nobody wants to spend development time supporting 10+ year old cards when there isn't enough time to support all the features on newer cards.