Cannot deny that. And it's undoubtedly helpful also for continuous integration. Poor performance is never a good excuse.
But my perception reading these articles is that the tone is different. There's seems to be a "huge problem with compilation speed in c++", that's also "a detrimental factor to using c++ itself" that I _never_ really experienced, except, like I said, in badly-organized projects.
It always felt to me, by programming, that writing and debugging were _always_ the problem, never compilation itself. By reading these articles, it feels like I'm either too slow, or there is some magic that I would need to be doing to use the compiler 20x more than what I'm doing now.