There are a few interesting talks, but the vast majority of speakers just use a lot of fancy words and have very little actual substance. There's also a great deal of cargo cult science that is promoted. Many speakers seem to be on there mainly to promote their own book.
When you take into account that attendees must pay exorbitant prizes to attend (apparently in the thousands), it really puts it into perspective just how little value is offered for their money.
The whole conference reeks of a self-congratulatory elitist echo chamber - a gallery of trendy buzzwords that when all pieced together apparently comprise a cocktail of wisdom (in reality, more of an open sewer). Many of the talks outright come across as if they were written by A. I. Overall, TED represents an obese haystack of faux intellectualism dashed with a scant few needles of worth. You're better off listening to kindergarteners do presentations on frogs. At least you'd probably learn something.