There is a video [0] about this censoring-"problem" by Youtuber Tom Scott. He talks about how it's impossible to implement with all edge-cases, easy to circumvent and thus usually not a good idea. Fittingly, the video is filmed in Peniston.
All these large companies Riot, Blizzard, Valve, etc implement censoring tools. People just swear over voice or add random characters to swear words or swear in different languages.
It really doesn't matter what they do, people will still swear.