I found this article both thought provoking and sobering, because it is something I came to understand as my kids started going from club players to playing with their High schools. Soccer as defined by Malcolm Gladwell as a "Weak link" sport where your weak link is exploited more than your greatest strength prevails.
It is sober when discussion of what happens when you end up with a couple weak links with injuries to key USMNT players and for those keeping up with it...I'd say Brooks' partial availability in the WC qualifying Hex was Exhibit A of how it impacts the US when a Starting XI talent is replaced by someone--in the unfortunate tale of 2018 WC qualifying Brooks being off the field and Omar Gonzalez being on it to gaffe against Trinidad; the US has emerging depth, but still not enough to overcome the absence or extended absence of part of the nucleus.
Weak Link theory