Hi Max,
It really isn't for decades unless you never decide to have surgery. You won't be living with parents for long and in not too much time you will be working and earn your own money and you can save up for a chop job. First it doesn't mean an end to a "normal" social life with girls. I was born before it was possible to do anything about it. Yes, it was a real pain in the ass to be around adolescent boys from 12 to 18. They are mostly major assholes but some outgrow it. The girls were never a problem.
The only problem with girls was all in my head. I went on my first date 2 days after getting my driver's license. Not a single girl ever rejected me because of my having a set of B-C cup breasts in that period (D - DD these days dependent upon weight and edema). A number of occasions it has become, "you can feel mine if I can feel yours" from the girls or ladies. I'm writing this from my RV at a nudist club. My future wife I met in college had founded the school nudist club. Nearly half the men have gyno of one cause or another by the time they hit their mid 50s. That is entirely normal and extremely obvious when nobody is wearing a stitch of clothing. Body insecurity and shame is taught by many societies. Then there is always a way to bully people.
So you can scare yourself to death catastrophizing all the worst possibilities and because of fear bring all your fears to realization making life as awful aS YOU IMAGINE. Please realize that there are more or less 80 million men in the USA with gynocomastia, with 2 million more getting it every year. Of those, under 10.000 have surgery every year. I skinny dipped with friends all during that terrible period but did not go to public beaches or pools. These days unkind remarks are rare but I shoot them down hard and educate the people a little. I can talk nearly anybody to near death.
Tell your self scarey stories if you want, or get over it, or make plans and start researching and saving for surgery. Take whatever pathway you want to take, but get started. This is your life and you are living it currently in the way you say you least desire and most fear. That's a choice too. Good luck. Have fun.