is buying second-hand shein clothes okay ?

hey everyone !! i recently discovered depop and started buying clothes off of there, and i see a lot of cute clothes that are from shein. i am aware shein is a fast fashion brand, and i don’t want to support them, which is why i would like to see what everyone’s opinion is on buying shein clothes second hand. i see so much negativity against shein and fast fashion in general within the alternative community (rightfully so) and don’t want to face backlash for wearing second hand shein/other fast fashion clothes. i know they aren’t good quality and won’t last long but i’d probably cut up to reuse and diy them into something if it comes to that. i’m a huge overthinker, and that probably applies to this, but i just want to know what the general consensus is. thank you so much !!

tldr; wondering if buying & wearing second-hand shein and other fast fashion clothes is okay