Earlier quoted context omitted.
And nobody makes Monty Python or The Hitchhiker's Guide to the Galaxy references anymore. I had a boss 15 years ago who had watched all things Star Trek, just like me; Knew all the things. But at one point he mentioned he wasn't really a fan, it was just "required reading, part of the literature". This is an interesting one. There used to be certain things that all nerds knew, and could talk about, use as analogies a…
Back in the day of The Internet of 1994 , HHGTTG was only 15 years old. But today, HHGTTG is very nearly 45 years old. For how many decades should references to novel fiction persist, do you suppose?
But to your question, Tolkien, Asimov, Lovecraft, et al. are still a heavy influence on modern Fantasy, Sci-Fi and Horror. Why do you think a mere 45 years should mean that something is no longer referenced?