Yes this terms is for every girl/women that love BL/YAOI/GAY ROMANCE, and also BROMANCE AND SLASH. Basically every woman is a fujoshi inside or at least most of us, it's just that many don't know that these things exist, especially out of Asia (it's the same for M/M Romance in America and outside, that is also written by straight girls and destined to straight girls mostly, many authors had man's nicknames but are still women xD)
About your last question I have a negative idea about that.
As I said these countries has not so much issues about these kind of shows because they know that are for girls, and about the content that is clearly Gay Romance , even if many of them are more on the YAOI/BL side, with yes 2 guys but one of them is basically a woman in a male body xD that's why we have uke and seme or top and bottom: one is "the woman" the other the man. It's not like that in every story but in most in the novels and manga it is, in dramas it's different because the actors are man and they add more manlyness let's said xD
And another thing: YAOI/BL is really popular right now in place like Thailand so it makes money and that's another reason I think why they do these kind of show, money rule the world..
But sure we have to start somewhere if we want to arrive someday in a world that see homosexuality as normal as it is and these kind of show as I said maybe won't help everybody but can start questioning in the mind of some people and this is sure positive.
Anyway China is already out of the business if you know, they can't show nor shoot anything BL, it's totally illegal since 2016 or 2017 I think so the YAOI/BL show that tryed to came out in the last months from China are sadly censured or cancelled .
This not work for Manga and Novels for some reasons as far as I know, I have no idea of why but I assume is because dramas have real people and manga is totally fiction.
Btw all of those are just my opionion about the things I know or heard around the internet, maybe some things are different, probably someone who actually lives in Asia can know better than me