A possessed person would not be in a position to defend himself by saying "the devil made me do it," so Drich's comment is not incompatible with demon possession.
While I don't doubt that demons have influences on people, Biblically it seems that actual possession is very rare. Almost all cases occurred during Jesus' ministry, which makes sense in a couple of ways: Satan may have been challenging Jesus, or God may have allowed demons to do things generally not allowed in order for Jesus to display his power and authority to the people.
While I don't doubt that demons have influences on people, Biblically it seems that actual possession is very rare. Almost all cases occurred during Jesus' ministry, which makes sense in a couple of ways: Satan may have been challenging Jesus, or God may have allowed demons to do things generally not allowed in order for Jesus to display his power and authority to the people.