Just to provide some factual information on the situation with Minecraft and its MASSIVELY outdated OpenGL version:
https://help.mojang.com/customer/portal/articles/1307761-future-opengl-support
Essentially Minecraft is using OpenGL 1.1. Its one of the only games left that uses an OpenGL version below 3.0. Moving to a newer version will see significant performance improvements. Computers old enough to not support OpenGL versions 2.1 and above are likely not fast enough to play Minecraft anyways. If you look at the Wikipedia page for OpenGL, you will see the version Minecraft currently uses is from the late 90's. Just let that sink in for second. . . Even when Minecraft does move to OpenGL 2.1, its still 8 years behind the modern versions.
https://help.mojang.com/customer/portal/articles/1307761-future-opengl-support
Essentially Minecraft is using OpenGL 1.1. Its one of the only games left that uses an OpenGL version below 3.0. Moving to a newer version will see significant performance improvements. Computers old enough to not support OpenGL versions 2.1 and above are likely not fast enough to play Minecraft anyways. If you look at the Wikipedia page for OpenGL, you will see the version Minecraft currently uses is from the late 90's. Just let that sink in for second. . . Even when Minecraft does move to OpenGL 2.1, its still 8 years behind the modern versions.