That, of course, is what the article addresses. While you may well reject the doctrine, to reject it as "anti-biblical" is insupportable.
It isn't biblcial. There's no mention of such a place, there's no mention of 'working off sins', and after the resurection there is no mention of any place that could even be confused with purgatory.
"Luk 23:43 And Jesus said unto him, Verily I say unto thee, Today shalt thou be with me in paradise."