I think currently the reason people don't want smn is because they are considered one of the lowest dps. Also, there are a lot of bad smns out there who let their pets die mid-fight which also reduces their dps significantly on a parse. At the end of the day elitests want the highest dps classes which are currently bard and black mage with lancer trailing slightly behind. From my experience, monk seems to get the same treatment as smn does in a lot of cases.