The reason, why the OpenGL subsystem cannot be loaded is not always, because your graphic card drivers are not installed. It can have multiple reasons.
But 99% of the time its graphics drivers.
Nobody will stop you from rewriting the error messages!
I doubt its a hard patch to write.
The question is what to write?
I doubt you can stick in a large amount of text there, and for lots of windows people, they will never run it in the console.
Maybe what we need more is a troubleshooting file in the default install, thet tells them to run under the console, and then has a list of common errors?
Either way, deciding what to make it say is probably harder than making it say it.