They are definitely doing more of that, but it's not always a get our of jail free card, and may actually put them at legal risk for destroying documents:
I find it weird that these get released as public records, but otherwise, laws against destroying evidence seem fine. And laws requiring disclosure of documents in a court to determine wrongdoing also seem fine. And laws requiring proper record keeping of decision making at large companies also seem fine. Particularly when the burden of record keeping (ensuring emails are not deleted) is not very large.
https://www.theverge.com/2024/4/26/24141801/ftc-amazon-antit...
https://arstechnica.com/tech-policy/2024/05/judge-mulls-sanc...