...is that the first thing people want to do with them - especially in the TED crowd - is use politics to force them on everyone.
And some of the ideas actually are good - for certain people in certain situations. The problem with using politics is that you're applying these ideas to everyone, by force. This usually results in an overall net negative impact.
We live in a world of incredibly diverse values, beliefs, and practices. Much of the goodness or badness in these areas is fairly subjective. For example, some people prefer more leisurely lifestyles and others value high productivity. Some people want to work and function in highly communal environments, and others are more individualistic. None of these things are wrong, but when you start building strict sets of societal rules around them then you create strong and completely unnecessary conflict.
There are less subjective areas that involve hard science and scientific experimentation, but these are relatively rare and usually uncontroversial. There are also plenty of ideas labeled as "science" that do not involve the scientific method; these tend to be extremely controversial and because the "science" label is misapplied their proponents tend to be very quick to pull out the political guns.
In any case, we also live in a world where far too many people want to force their beliefs and lifestyles on everyone else. The political left and right are fairly equally guilty of this - the left from an economic standpoint, and the right from a religious standpoint, and both from an overall values standpoint. It's deeply sad that virtually none of these people are capable of saying "Hey, it's OK that you're different - go be your crazy-ass self over there and as long as you're not in my face about it then we'll ignore each other and everything is fine." But instead, they demand strict enforcement. These days the left demands that we memorize sixty new gender pronouns a week, and the right loses their shit if you don't say "Merry Christmas."
We don't need 50 new TEDxasfaz talks a week. We need a planet full of people to chill the fuck out.