Also, siddhars and Arunagirinathar are people who have reached highest level-- they have direct experience of Gods(skandar anuboothi).
A mortal like me has a long way to go to reach a level to even make bad comments on saints like arunagirinathar and siddhars.
for me,arunagairinathar's works are very holy and will be sung in temples , even though some people might consider it as filth just because of their kama content.