Shows you how resilient car and cdr have been against decades of complaining and bikeshedding. That just reaffirms them.
[1] Look at e.g. https://madnight.github.io/githut/. The most popular Lisp is Clojure, with a whopping 0.33% market share. Scheme and Common Lisp don't even make it to the top 50.
What more-user-friendly terminology do you suggest?
CLR: cell levo/left reference.
CDR: cell dexter reference.
Organic chemistry uses these letters and prefixes. E.g. "L-glutamine", "D-glucose" (a.k.a "dextrose").
The H and S (hand side) don't really contribute anything. (Yes, left is side and a hand).
I don't think car and cdr are newbie hostile; they are rather troll-fertile.