As someone with a liberal arts degree who also, charitably, is a pretty decent developer, this is spot on. (No disrespect to those educated in different contexts, or those who have difficulty for other neurodiverse, cultural or ESL, or other reasons who excel in other areas.)

After years on non-technical or customer-facing teams, followed by a dozen years in technical roles, I've noticed that my ability to effectively communicate abstract concepts has greatly diminished. This has held even for things I deeply understand at both a micro (the technical details and dependencies) and macro (the business context) level.

Unedited, this comment full of parenthetical statements and loaded with commas, is a prime example of what's happened. Is it due to over-training one's brain to account for all the little details? Anxiety about all that could go wrong? Over-excitement about being on the precipice of nailing something? Or more general cultural trends in the way we process information? Time will tell, unless the Singularity catches up first.