It's only "still" the opinion of Apple if you scour archived sites for this advice. You won't find any current Apple pages supporting this procedure, but NewdestinyX continues to perpetuate this as Apple's current recommendation. In fact, Apple has in the past advised that you make sure you go through at least one battery discharge/charge cycle every month, however a full discharge and charge cycle does not mean to drain your battery to 5% and then charge to 100%; it can take days of regular uses and partial discharges to go through a full charging cycle.
No current Apple documentation that I or NewdestinyX have found recommends the monthly calibration procedure. Yes, some websites out there will suggest doing it every few months for LiOn batteries if you're noticing issues, but they are often from 2012 or older. If you're having issues with your battery percentages then this procedure won't make things worse, but there is no need and no modern guidance from Apple recommending this to be done as a regular, monthly thing.