I have it installed, and use it now and then. The original need was when a news site I read (
http://iceagenow.info ) was being blocked by Optus servers. My cable ISP... Tor was a way to get around that.
Another thing it was useful for recently, was checking whether I was shadow-banned on a particular youtube channel. Answer: yes, I am. When I am logged into my google/youtube account, then my posts on that channel appear normally. When I visit cloaked by Tor, there are zero posts by TerraHertz to be seen. Same comment count though, which is amusing.
News to me that youtube even has that feature. Quite evil and dishonest really. An ordinary ban, fine. Pretending a user is not banned when they effectively are, is dishonest.