I do make an exception with all of that when all the pub science guys shit on religion though. Can't seem to get enough of that even though I'm out of my angsty atheist teenager phase by 20 years
These folks need to feel popular and build a brand and its really hard to just stick with one thing, as it limits your audience, so you grow in to other venues.
Telling people what they want to hear in a nice package that makes them feel smart is a business as old as time. Oprah built a whole empire off of it. The internet has just widened the reach.
Have you spent any time wondering how those people knew this was coming years ago, but you didn't see it?
They just didn't care to spend more brainpower on the issue than they already had. Most people have better things to do than be the most well-informed voter or investigate the history of the people they see on YouTube.
One of them which sticks with me is about fighting addictions and habits - every time you win this internal fight (go do something unwanted, don't light up that cigarette or drink alcohol) you get a bit stronger and addiction gets slightly weaker. Same for habits and defeating procrastination.
The hardest part is the first step, when opposite side (in your own persona) is strongest and it feels its too high a mountain to overcome. With addictions you never chip it away to 0 - that's the unfortunate cold hard truth, but you can chip it away into something you can manage continuously. Good habits are often self-fueling after crossing some threshold, ie exercise and eating healthy.