I'm not saying there's no valid criticisms of TED, or even really endorsing it, but the claim you report clearly can't be strictly true - there are TED talks with "inequality" in the title.
I clicked your link. Even though there is an article at the bottom with "inequality" in the title, I tried doing a search but couldn't find a single talk with "inequality" in the title. It is a possible tag, but cannot be found in the title.
Edit: Snopes says the story of "censorship" was disseminated by Nick Hanauer's PR team after TED decided not to promote the story: https://www.snopes.com/fact-check/banned-ted-talk-nick-hanau...
People tend to only care about the inequality where they stand the most to gain. Most US citizens would benefit from wealth redistribution in US, but unhappy with a global redistribution since they would average down.
In some ways globalization is causing both increasing economic equality for labor and increasing inequality for capital providers.