FAF doesn’t balance around insane turtle map -> insane turtle map gets played a lot.
FAF balances around insane turtle map so that the non turtle map tactics work -> even more turtle variant of turtle map evolves so that the gameplay remains as basic as possible.
See why it’s pointless?
Likewise if Dual Gap becomes “too turtle” by popular opinion, another dual gap variant that converges to what is considered “good gameplay” for that group of players will be made.