A lot of best practices in large organizations are anti-patterns in early stage pre-PMF teams.

Best practices for large, post-PMF orgs are about structure, communication, and bookkeeping.

In a small team that is iterating tightly and in constant communication, you don't need structure.

Structure, once you've found something great, helps hold you in place.

But structure before you've found what you're looking for just holds you back.