https://www.threads.net/@mosseri/post/C051TLnud8U
There's your playing nice. They want to feed on ActivityPub data, while only contributing in a per-user opt-in selection. It's a joke, and both their motivation and what they are doing is absolutely fucked. It's another cog in their data ingestion machine that they can keep fucking around with, again.
I really can not comprehend why anyone would give this advance of trust to Meta, when all signs are showing you to bail.
The problem is not them reading data, but that Threads will take Fediverse content, and display it on Threads. In the opposite direction, Fediverse will only see the select few user content that do actually opt-in, and let's be honest here, most users won't know what the Fediverse is, except for again the few people that are on both platforms. This is absolutely not "playing nice" as you've put it before, and purely parasitic and, again, purely a greed decision by Meta. I don't really know why you are shilling so hard trying to excuse absolutely unexcusable behavior.