No post has been made that I know of. Mastodon's CEO laid out his stance in the post below and I would hope Lemmy would follow with them.
Lots of echo chambering going on in here about EEE and Meta profiting off of everything. In reality, they can scrape data like anyone else, the profit from such small communities is negligible, and defederating meta would only hurt those that defederated because way more users than people here think will want to see and manage Threads while also not needing a Threads account to avoid the data hell that it is.
https://blog.joinmastodon.org/2023/07/what-to-know-about-threads/