I'm sorry if this sounds a bit clunky, I'm trying to put words to the feelings I have and think you might as well.
You were so very, very unhappy - which meant you acted in a way that harmed you.
Your body showed you everyday how much you hurt and acted as a constant reminder of that unhappiness and hurt. So when you looked at yourself, you saw your hurt.
You've done so amazingly well in taking that hurt and unhappiness and changing how you treated yourself - because you knew you deserved kinder treatment.
However, at the moment, you're focusing on the after effects on your body of what happened to make you unhappy despite all that time, effort, blood, sweat - and I'll reckon a fair few tears - that you put in to prove to yourself that you deserved more from yourself. Not to prove you deserved more from others (you absolutely did) but to allow yourself to treat you more kindly.
I'm not a massive fan of my apron. Each time I lose some more weight, it changes from loose to smaller/not so loose and back and at present, it's in the slapping sounds when I run stage (I probably need the next size down compression leggings or some sort of high waist, long leg compression shorts to wear underneath). BUT I CAN RUN.
I'm not trapped with the only way to respond to a horrible situation being to swallow down my pain, fear and anger with food and making me too heavy to be treated the way I was all those years ago. I'm not trapped by my body being too heavy to run. So I run. Because I am FREE to do so.
I have this extra part of me that I'd rather not have, but it's still far better than having it at full stretch as it was when I was carrying around all that extra weight emotional pain with me. I'll take any 'meh' or 'ugh' feelings about it and use them to fuel my next run or gym session - one that I would never have been able to do at my heaviest - hell, I wouldn't have got in through the pod doors in the first place.
Surgery is absolutely your choice with the appropriate surgeon and anaesthetist to ensure the risks are minimised - but it is possible that if you were to have it, you would then look at the surgery scars and focus upon those as a reminder of your original suffering, rather than of the amazing time when you decided that you deserved better and, bravely, determinedly, put in so much work and physical pain to make that happen.
Further therapy could help you focus upon your freedom and the way you took a huge and scary, difficult step to change the way you reacted to your pain. But it could also help you see that that strong, healthy body with some loose skin doesn't represent your trauma and suffering, it represents when you were your bravest and put yourself first. Because you knew you deserved better. And you DID it. Nobody else - YOU did it.