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Like all social media, your feed depends partly on who you follow and partly on behavioural cues their algorithms can determine about you (such as who you interact with, sites you visit).
It may be skewed one way or another more than other social networks, but even so, you should be careful saying a social media is a racist bigoted right wing echo chamber because it can sound not like a recital of popular media but more personal experience
I made the mistake of searching it yesterday via a proxy while trying to search for local police news (why do our govts use these mechanisms to publish first) and ran into threads calling for ethnic cleansing of south asians from Texas. Not a great read.