whats wrong with rushing a bottom tier sorortiy

Nothing. Sisterhood experience is the same you'll just have less social plans. My friends in bottom houses live their sororities.

nothing except for connections. the only benefit from being in a top house is pairing with top frats. the frat parties themselves r mostly the same regardless of status from my experience. i honestly have had a lot more fun at certain bottom frats than any mid to high tier frats i’ve gone to. it seems to depend on the party like entirely.
i also have friends in mid to high tier srats who have complained ab their sisterhood or hazing. i think lower tier srats might be more relaxed and open-minded toward differences within the sorority. I COULD BE SO WRONG ab this though!!
ofc this is all just my experience. try not to worry about what tier u get into and try to think about where you would actually fit in the most comfortably. i had a friend drop a touse a few weeks in because she realized it didn’t fit her and she wishes she preffed a different mid tier house.