It's kind of a mix of things. "Political influencer" is just a new way of saying "propagandist." Especially when it comes to the MAGA movement and fascist extremism rising all across the globe. These are the new KGB initiatives to destabilize Putin's enemies across the globe (and all kinds of similar intelligence agencies, the US does the same thing I'm sure). It's the "outside influence" that Twitter and Facebook were accused of during the last two election cycles in the US, which could have major consequences for Musk and Twitter, and this looks like Twitter trying to get off the hook for that by saying "we gave them the info they needed, we're not at fault for them making the choice to be stupid and believe lies."
But the big thing is that it might shake the faith of the cult when they have to start justifying why they've been listening to the exact kinds of people they hate.
I've seen estimates put the materials cost somewhere around the $425 - 500 USD range because of the specific, semi-custom hardware that they're using. It's also good to note that Valve will be able to get a better deal than any of us will because they can get bulk discounts and aren't buying each part at a market rate profit from retail vendors.
Some people seem to be of the mind that it will be somewhere around the $500 - 800 USD range if tariffs and the RAM situation don't screw with the price, and that it will probably price out the Xbox with Microsoft's 30% profit demand and be slightly more expensive than the PS5 while having comparable but not quite as much power.