humidity/RIs?

hello, i hear a lot of mixed views on this subject so i was wondering if anyone knows the answer. is the whole “too high humidity will give your BP an RI” statement true? i’ve heard some people saying there’s no such thing as too high humidity, as long as the substrate isn’t muddy and stangent and temps are okay. i’ve just changed my boy onto topsoil/playsand and thankfully his humidity is finally 80 on his cool side and 55 on his warm side, but i wanted to check this is okay. when i open his enclosure it feels vividly humid and warm. i’ve done this because his first shed with me was unfortunately very rough and he got a retained eye cap, im really hoping this will help him out :)

pic for tax