Ur name says it all😜, n btw, ive been a k-fan since like 1st grade so its been like 12 yrs now😎😁 Not only BTS but also black pink are crazy famous, i think its because they did pretty good when it comes to introducin themselves to the world. I dont think its bc of their lyrics tho bc most ppl who started listenin to k-pop recently donno shit abt wt theyre sayin. There r conspiracy theories tho abt them bein illuminati to gain fame im not sure tho👀. N abt black pink, it would amaze me if they weren't famous cuz they got some lit beats in their songs🔥🔥 n also they tour a lot. In in this industry, once ppl noticed ur talent, u get a lot of apportunities. bts collabed with df artists like jason derulo twice,(savage love n shut up n dance) lauv(who), halsey n etc which made'em dance in the billboards n collab with famous ppl is the key to fame. Ik that from experience cuz i used to prefer EXO before but thay changed now😅 they also started singin english songs n now they are entering the english world. A lot of reasons actually, the list goes on