The problem with this is conflating *output* for *impact*. A team of lone wolves writing 1k LOC by the hour is good output but not necessarily good impact.
A team with higher coordination overhead and "structural support" will probably have lower output, but if it focuses on significantly higher leverage activities might just have a better impact. The key question is whether that impact is visible and understood (often not) and lots of businesses are bad at understanding leverage.
I see this lone wolf BS from lots of founder types who mistake their own grind for real performance, often missing their own blind spots. I don't disagree that the 80-20% rule comes up and that some people have an outsized contribution overall compared to others, but to say that collaboration is dead as a result is throwing the baby out with the bath water.