nowadays macbook batteries aren't something i'd call "easy to replace" but it's not something a typical repair shop or meticulous individual wouldn't be able to do – most beater windows laptops don't have user-replacable batteries either fwiw
if the ssd is bricked you do need to replace the whole "logic board" tho which sucks
if the ssd is bricked you do need to replace the whole "logic board" tho which sucks