It got my father. Living in rural area, cable/satellite TV became too expensive and low quality. So, us kids paid for an internet connection for him. Given only YouTube to inform him, he went from a generally relaxed redneck to talking about how "black community is a lost cause" and "we need to glass (nuke) the middle east and take their oil" in a very short time.
We got Netflix for him and he's calmed back down some. But, definitely not back to where he was before.
[1] https://www.nytimes.com/interactive/2019/06/08/technology/yo...