Kobe used to lunge at me and sometimes fly at my face whenever I walked past his cage - it was worse when he was "in season" and in the mornings. Plus eye contact used to make it worse. I think it was because I was passing by too near to him for his then comfort - but space was tight so I couldn't help it. Plus I know it was further reinforced by the dramatic reaction he got.
So I moved the location of his cage so I don't have to pass right by him all the time. He's been fine since, plus I am now ultra careful to avoid him having to lunge at me.
I usually slot in his food bowls when he's away from the cage since that also induced lunging and chasing. When I do have to slot in a food bowl with him in the vicinity, I provide no eye contact and come in at a lower level than him to show I am not a threat. I have a chair beside his cage and I usually approach sideways or even backwards to sit on that then slot the bowl in then immediately leave - no eye contact. Silence too, since speaking could also induce a lunge - I say my kind words as I leave. Slowly I will start introducing more speaking, quick eye contact and straightening up until I can approach his cage normally. But my goal is to make sure there is no need for him to lunge - I want him out of the habit.
I think it is absolutely possible to get them out of the habit of doing undesirable behaviours. Kobe used to bite me a LOT before I started learning about behaviour. It took perhaps a year and a half to work on that habit in different situations - for example I couldn't skritch his head through the bars of the cage, without him suddenly turning and drawing blood. We worked at this particular scenario for maybe a year (slowly, slowly increasing the skritch time and leaving before any reaction from him) and now I can always skritch his head through the bars of the cage for as long as he or I like, in complete confidence that I won't be nailed. I have noticed that it now seems alien for Kobe to bite - I have pushed him slightly as a tester recently and he just mouthed my finger briefly whereas I can tell you in the olden days I would be minus a finger. The only time he ever bites now is when the doorbell rings and he happens to be on me - he gets overexcited and can't help himself.
You know Wasabi, I can only tell you my experience with Kobe. It's not fun living with a bird who lunges and bites - and a big one at that!