Have installed STEEM python3 libs on Raspbian (Rasp Pi) linux with ZERO issues...building wheels etc zero problems.
So.... with Raspian ~ Debian which many linux versions are based on (Ubuntu etc), it seems that Windows may be the only OS which has STEEM build problems. Since there is an easy workaround (which took ages to find), no wonder Steemit Devs are not interested in fixing STEEM WINDOWS.