I don't see too many actors nowadays say how uncomfortable/corny sci-fi lines are to speak. Is this maybe a sign of the times when science fiction/fantasy is more ingrained in our culture and we're simply used to it versus how we were in 1977?
I doubt that. The actors on the original Star Trek--
a decade before A New Hope's
rolled out technobabble like they were raised doing it, which went a long way in selling TOS. This applies to Lockwood and Dullea in 2001
(not matter how few lines were delivered).