So no, I have not yet seen any site discussing the major announcement. The ‘trading cards’ stuff does seem rather silly to me. I anticipate seeing more very soon.
Yes, the trading card stuff was beyond silly -- so silly and embarrassing that nobody on Trump's side wanted to retweet or repost it. Lots of Trump people were outraged, ready to give up. They might retweet it once, and say, "out of here."
The real anti-Trump people would have re-tweeted, and grabbed a copy to repost on other sites.
Musk has been weeding out some Bots and Trolls; some inside Twitter, and some outside. Musk said, "we are tracking IP addresses." Those accounts would have been the ones to immediately retweet, repost, and propagate something so clearly detrimental to Trump.
My guess on the trading card thing is that it was for tracking the Bots and Trolls.
Accounts like the Kasselstein brothers popped back up, and everybody had to block them. I've blocked thousands of new and revived troll accounts in the past month.