Comment by herewulf

My anecdata would be that the average C++ developer puts includes inside of every header file which includes more headers to the point where everything is including everything else and a single .cpp file draws huge swaths of unnecessary code in and the project takes eons to compile on a fast computer.

That's my 2000s development experience. Fortunately I've spent a good chunk of the 2010s and most of the 2020s using other languages.

The classic XKCD compilation comic exists for a reason.