You can see some of the larger creators censoring their speech. No more gas the x, niggers, kikes... or at least very few and not said by Ralph. Other more edgy streamers can't put racial slurs up in text anymore. Ralph has been heavily modifying and/or not reading superchats. Little things like that.
AFAIK, no one has been told to restrict their speech beyond what the ToS defines. That is, you can't have calls to violence on people. I'm not certain why Ralph has been censoring 'nigger' and why he seems to disavow even when others say it like Rand.
Rand had to remove his happy dancing letters from his stream as a result of whatever was pointed out to the owners that took down Josh. From what I understand, the 'hatespeech' qualifier in the ToS has been stated to include specifically 'racial slurs' in streamers names, in stream titles, and statically shown on screen (which thus causes a thumbnail to show on the homepage with it). This restriction applies
only to streamers though, and NOT chat. As I understand it, this is a ruling that has to do with the acceptable use policy of the back-end streaming / CDN platform. The chat and front-end are hosted on a separate service.
Ralph has been heavily modifying and/or not reading superchats
Ralph has been actively censoring entire superchats depending on contents. Supposedly the GQ (Gunt Question) had been a self censored topic. The word 'Gunt' was actually blacklisted in chat when the meme first taking off, but that's now been reversed. Additionally ethanralph.com was also censored in the chat (don't remember if this was due to mods removing links or if it was blacklisted though. I was already chat banned by then).
Overall, the GQ and #GuntGate seem to have undoubtedly gotten to Ralph. Additionally many Gunt posters were banned in his chat (stream.me's chat bans act like shadow bans). User with Gunt in their name were targeted as well. The bans on TRR's channel also appear to have been applied to Gator's channel as all users banned in Gator's chat, were also banned in TRR's (note: I only had only asked like 3 users, so little speculation)
Though even Jim has begun to address the GQ:
Where I had previously seen Ralph
temporarily muting users who are spamming or causing trouble in chat, it appears that it has now shifted to a
banning mentality.
Ralph has started to create a hug box for himself, while claiming that he's not bothered / mad about it.
Ralph has even been
banning Gunt posters in discord and
blocking on Twitter:
Null was banned from Stream.me, despite his content being significantly less edgy/risky than many others on the site (including Ralph), apparently because the Anglo Menace was threatening to dox the owners' kids or some such garbage.
I doubt that
this was was the reason Josh/Null was banned. BadTits had "doxed" their names on twitter a month prior while digging up info on their stance on free speech. Finding the info on relatives from there is not too difficult, and could even be perceived as a threat. I think what you are referring to was another instance in which Josh/Null was deplatformed.
http://archive.fo/PZ62u
http://archive.fo/ms6bC