For reference (as per Wikipedia):
Any organization that designs a system (defined broadly) will produce a design whose structure is a copy of the organization's communication structure.
— Melvin E. Conway
Imagine interpreting that as advice on how you should try to design things, lol.
Tbf, I think most of the post is just typical LinkedIn fluff, but I didn't want to take the poor fellow out of context.
There's another way to see it: If a project has more than three contributors it's not doing one thing, and one thing well, and should be split up.