As we can see, the fact that the proponents of dumping head covering don’t actually believe in enforcing long hair is proof that none of them really believe long hair is the covering. So, they have no choice but to change their reasoning to either “historical context” or accusations of legalism.
It's true, those who teach that Paul is talking about long hair and not a fabric covering don't show any interest in actually setting a standard of long hair (how long?) for women. The churches that teach this are usually full of ladies with short hair.