Guardians is on #3 because the movies were good, whereas GL was a piece of crap. Hal being the only one in the movie is irrelevant. If it was good, we'd likely have more movies with more GLs.
His current series is also being cut short likely to cater to this 5G nonsense, despite sales by all accounts being pretty good. The "Silver Age lust" is not as much of a shield for him as you think.