
It is indeed, as you say, subjective. Therefore, for a real answer you would have to ask the respective leader of any specific free company what they mean by wanting "skilled" or "quality" role-players. To say they welcome RP newbs yet only want skilled RPers could be a bit hypocritical, but there are many people who jump into RP with a decent amount of skill (sure, RP experience helps, but all it really takes to be a good role-player is decent spelling/grammar, common sense, effort, and respect for others). However, as others said, don't read too much into it and don't be alarmed! For a lot of FC's, "skilled RPers" seems to simply mean people who take RP seriously and put in an effort, while other FC's don't particularly look for any certain quality of members when they say that, they just want to seem exclusive and fancy.