@animeboii: No, you're right. It's not so much about re-translating, but at least uploading them from the previous scanlators.
@Skine: Depends on the group is why. Some groups do an ok job at re-translating, but JB is very well done and accurate to the original manga, typically. Some groups tend to take artistic license and either make the translations more crude or less crude to suit their preferences.
In this case, the group Fallen Angels, did those chapters (Here's the link directly to the BHA on mangapanda: https://www.mangapanda.com/boku-no-hero-academia). Either the group did not give permission to have their stuff uploaded here or they don't know. Might not be a bad idea for some readers to reach out to them about it.
I know how most of you feel and it is getting slow but see it from a different light don't think of the story of a whole think of \ how the characters make the story and if you think of that this Himiko ARC IS EFFIN BOMB!!!!
@Sackeey2: Not just you. The previous chapters were all done by just Fallen Angels before they passed the mantle over to JB. It's doubtful JB has these previous chapters. What this means is a 3rd group either needs to translate 1 to 202, or if Fallen Angels is still around, see if they'll agree to post their chapters here.
JB probably could do it, but I don't see it happening anytime soon with all the projects they do. Might be better if a group with some free time did the missing chapters.