> "DX tarpits"
Google shows no results for this term so i'm guessing its your own short hand for something hard?
DX is developer experience (analogous to UX for user experience).
Tarpit is often used as an analogy for anything that suddenly slows you down.
Potentially a play on https://en.wikipedia.org/wiki/Turing_tarpit
(DX is developer experience, tarpit is used idiomatically to mean “slow/difficult thing”)