No! Forget about Open GL. The latest versions of AE don't even support it. Adobe just gave up on Open GL as a bad job... it never worked well enough to get traction.
You get Open GL for other applications, but NEVER for AE. Plain 'n simple.
You'd think after all these years that something would be done about this but oh well.
Thanks for the update on this.
Dave is half correct.
We did throw away our old, terrible OpenGL renderer several versions ago.
But we also do still use OpenGL in various places where it makes sense, as described here:
The reason that After Effects shows OpenGL 2 in the GPU information box is because that is the version that is being used for these features. When the application starts, it tells the OpenGL system what level of features it needs. We're not using any of the more advanced features of OpenGL 3 and later yet.