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Mastodon's Founder & CEO Gives His Thoughts on Meta's Threads
As has been mentioned before, Meta can scrape most data from the Fediverse already as it is publicly available.
One strategy could be to default to publish to followers only, and not public? It would be a great loss for the open web, but it might be a necessary one to make sure blocked instances do not get access to most of our data.
Another solution could be to publish all posts under a Non-Commercial Creative Commons 4.0 license, which I assume would legally block Meta from using our content in any context as they earn piles of cash on mixing user generated content with ads. Not sure if they would respect it, but it might give us an option for a class lawsuite in the EU?