It's good that you bring this up. It is definitely a more widespread issue in the WLS community considering our obese beginnings. I have definitely experienced the 'consequential' chain of events where one thing means this thing is justified and so on. I've struggled with BD throughout my teenage years. Ironically I overcame BD when I was at my highest weight. Seems like something 'clicked,' and I realized that the weight does not and should not define who I am.
I think the important take-away is that you realize you've taken the necessary steps to better yourself. You were patient enough to wait for surgery, get the surgery, and now maintain a healthy weight. You know you've done well, therefore you must give yourself credit for your achievements. As for plastics, I think that is a personal decision and should not be impulsive. After all, hard work does pay off internally and aesthetically; plastics only gets you there a bit quicker 😉.