I know most pop music uses some auto tune, but I've heard a few Glee songs (against my will) and the auto tune seemed almost omnipresent! Does Glee use auto tune more than typical pop music normally does?
The question itself is rather subjective as the 'pop music' genre in general is quite broad, and I don't think anyone could define what a typical pop song was.
Considering that Glee is primarily a TV show, with time and cost restraints. I would have assumed the actors wont have the same amount of time to get the vocals 'just perfect', in the same way a professional recording artist would (recording artist often layer vocal track after vocal track) and so autotune is a way to speed up this process.
That being said; in an interview with Hollywood Reporter, Glee's music producer, Adam Anders is adamant that autotune is only used to create an accurate cover of the original track
We don't use auto-tune. It's complete BS. Do I edit the vocals? Of course... When things are autotuned, it's on purpose -- to match the original song, like Lady Gaga’s "Telephone,"
So to answer the question, autotune isn't used as much as you may think, and is definately not used any more than a 'typical' pop song.