Well, bl means boys love. Yaoi is just boys love, but has a lot of sexual scenes. Shounen ai is just boys love, but without sexual scenes and focuses more on their relationship (most of the time its school life)
Just because the term yaoi is outdated
in japan doesn't mean we can't use it, and this is only my Knowledge/Opinion but I think there are 2 type's of BL which are BL and Bara. here's a link to know more about BL https://en.m.wikipedia.org/wiki/Yaoi
That's your personal opinion. Language evolves. Yaoi is the term English speaking people use to refer to gay manga from Japan with sex in it. It doesn't matter what people now call it in Japan. Just because you don't like it doesn't mean it's going to change how manga sites list it nor is it going to change how people describe it. As evidenced by the many responses no one agrees with your view point so far.
Why. Do. Yall. Still. Call. BLs. Yaoi???????? Its just a really outdated term, instead just use BL(boys love) or GL(girls love).