Why everyone is bragging about losing virginity before 18

Losing virginity before 18 is considered as an achievement nowadays. Am I the only one who thinks losing virginity before 18 is a sin?? I have lost count of the people on this platform who are proud to have had sex at the age of 16, 17 etc. I have seen many 16 year olds on this platform who have had sextapes leaked. And fake proud of it like if someone who had sex at 16 is bigger than a virgin of 19. What the hell is wrong with people these days.