Effeminate is a relative term. It's not absolute. What's considered effiminate may not be effeminate in other cultures. For example, long hair is sometimes considered effiminiate yet some think its masculine.
Japanese men are considered more effiminate than European men since they have little body hair and less muscle tone.
In that verse, Paul was clearly talking about men who acted like women. Nowadays, I am sure he'd be appalled at how effiminate men are nowadays and how some women are leaders of churches. The problem I have with Paul is that he's a cultural bigot and his letters were all his opinions and delusions.