Agreed that it can and does happen in both sexes--you can almost be certain of an increase in aggression around that time, in 99.9% of cases and species.( I would expect it--to some extent--either way BUT I do think that there ARE things you can do to make it LESS severe).Mitigating these environmental triggers does NOT mean that puberty will be easy for either sex, because, even in a perfect situation, you will see changes/new aggression to some extent...BUT controlling your behavior and the environment CAN reduce behavioral issues to a degree (even if they are still very obvious with controls in place.
Controlling the following factors can make puberty much more bearable than it would have been otherwise (even if it still seems bad, it could be much worse) BUT Amazons WILL be Amazons:
no boxes, huts, tents, low shelves, under furniture, no blankets, no pillows, no bedding...no nooks...NO SHADOWY SPACES (not even remotely...)
10-12 hours of sleep on a nightly schedule (like a kid)- shoot for 12 quality hours of sleep (in a setting that is dark and conducive to sleep)
No cuddles, no excessive touching, no stroking like you would a cat or a dog. PET ON THE HEAD AND NECK ONLY!
Avoid warm/mushy foods during times of hormones
DO NOT get them used to unsustainable behaviors as babies that will be inappropriate when they are adults---they will not understand why you have cut them off it you suddenly change your relationship when they are sexually mature.
Other birds can be a trigger as well.....ESPECIALLY those of the opposite sex, but not limited to those of the opposite sex...heck- they don't even have to be the same sex or species.
Provide LOTS of enrichment activities and make sure that your bird is socialized with lots of people (who also follow the rules above)....and make sure your bird's cage is never even partially covered during the day (except for extremely sick birds who may need a darker environment to stay calm etc)
Just like a teen who has hormonal surges and mood-swings, a bird will experience similar ups and downs during puberty and NO adult bird is the same as its baby self (just like no adult human is the same as its baby self). My whole point here is that lots of people DO inadvertently make adult life with their bird worse by failing to recognize hormonal triggers (which quite literally, alter their birds hormonal production and logic) BUT, even in the most controlled/perfect home, you could still see some aggression, so you have to be prepared for that if you adopt a larger bird...
Basically, if an aggressive Amazon (at puberty) would cause you to re-think or re-home, then don't take that plunge because there is really no way of knowing...you can only do the best you can to try and control some of the aggravating environmental factors, but as stated above, a lot of this is individual to the bird... No way of knowing how yours will be. Yours could be very chill compared to some, or it could be as bad as what you have heard....so....do with that information what you like. You know it is one of the "hot 3" , so make sure you are up for what COULD (but may not) happen.