>Spiro accused Meta of hiring dozens of former Twitter employees who “had and continue to have access to Twitter’s trade secrets and other highly confidential information.”

So you fire 80% of your workforce claiming they're dead weight and completely unnecessary, while simultaneously suing their new employer because apparently they were vital cogs who somehow "continue to have access to trade secrets"? So vital you're refusing to pay out any of their severance packages. Only in Elon land.

My question is – what trade secrets does Twitter even have that Meta didn't already have the existing infrastructure for, or competency to build themselves (probably better)?

There's zero "trade secrets" (everyone knows how twitter works) and no technical secrets necessary. Threads is just instagram. It works and looks the same way. Instagram is photos with text, Threads is text with photos. The latter is not exactly rocket science to build when you already have built the former at scale and ran it successfully for years. And that's the genius of it!

How does everyone know how Twitter works? Doesn't it use proprietary code?

and then I'm pretty sure Elon had a whiteboard session during his first days before firing everyone and had people explain it to him. Which he then posted on his twitter account. https://twitter.com/elonmusk/status/1593899029531803649?s=20