It's not like the architects at Facebook would do something like scrap Android's gradle build system and replace it with their own custom build system...oh yaa, they did do that.
Worse yet is when the people who really didn’t make it at a FAANG start the “What we did at X…” adventure. We had a couple of those wander through the woods on their dream quest to the tune of a few million dollars in wasted work we’re throwing out now that they moved on.