Whatever method suits you in order to pass the exams is the correct method for you. The vast majority of the ATPL TK exam is never used in the real world. If you asked a random sample of current professional pilots to sit the exams you would probably not get any volunteers. If you did they would almost all fail. You will not hear much discussion about departure and conversion angle on a modern flight deck.
On the other side of the Atlantic it is possible to study the question bank and pass the ATP in about 3 to 5 days without the need to enrol in an approved course.
Welliewanger's comments are totally inappropriate.