Well you handled that appropriately on the spot. I'm thinking like wow you are doing so great... then boom assholes can't keep their mouths shut.
I admit though I haven't told anyone about having the sleeve done. They all know I truthfully had hernia repairs.
You are much stronger than most people.
I initially doubted myself about keeping it to my immediate family. Not so much anymore. My progress, successes and pitfalls are my own. I can't handle negativity in my life so I walk away.
Kudos and keep towards where you want to be