>>715332062Touhou canon ages are in like the 500+ years old range.
Obviously it's not really fooling anyone, but it's not doing what blue archive is doing, which is to have:
1) a school setting full of students
2) 99% of said students explicitly being underaged
Also there's no single male self insert like in BA (no, Rinnosuke doesn't count and neither does Fortune Teller).
In touhou this results in the vast majority of dialogue and character interactions happening between the girls. There's other stuff for fans to chew on who aren't big on the whole lolicon aspect.
Hence touhou has a more welcoming setting, although this does mean LGBT+ is gonna check it out, which they do.