Depending on the performance requirements of the problem domain and the definition of "slow" and "competitive" your comment could either be true or false, which

Depending on the performance requirements of the problem domain and the definition of "slow" and "competitive" your comment could either be true or false, which makes it rather meaningless. The matter has not been settled and will become more important if the industry decides that gaining developer productivity at the cost of software inefficiency is no longer worth it.