The security issue is very likely scenario. If you’re in Russia, you can go to jail at any moment on totally bogus charges. It is very easy for FSB to pressure some random kernel maintainer into adding hard to detect backdoor into their code, it will be XZ situation all over again.
it’s used to verify that OpenGL ES2 works onn your system. It’s the variant of 3D graphics drivers that is used on smartphones. Many apps nowadays write their GFX frontend with GLES2 so it uses the same code on phones and PCs, and if they compile the app to run in the web browser, WebGL is also based on GLES2.