If someone uploaded a game to mediafire or gamejolt or whatever that was full of racist hate-speech then that platform would receive complaints about the content and take it down.
Apparently this does not apply to Steam though. 
Really?
Well, there was some controversies regarding some horrible shooting games like Hatred and Active Shooter, where the player got to plat as a terrorist gunning down defenseless civilians for the sake of it, being let up on the Steam storefront and only taken down after massive criticism, but the last few years Steam has basically let
any game up on their storefront, not just including games that are basically hate speech and glorifying terrorism and neo-nazism, but also asset flips, games filled with stolen code and artwork, broken games missing their executable and straight up malware and viruses, all are allowed on the Steam storefront as long as the "developers" pay the fee for putting it up there. The journalist Jim Sterling has made several videos about the subject on YouTube, but there has also been a few articles about it in games magazines,
here's a polygon article of a game that straight up hijacked the player's computers for bitcoin mining.
I'd try and come up with a joke about how low Steam's standards are, but no matter what outrageous vile hate propaganda, theft of copyrighted materials or malware scam I can think of, I've already seen examples of it on Steam.
Even the edgy freeware games I played as a teen on sites like Newgrounds and Gamepuma way back in the early 2000's had higher standards than that.