This is really disappointing, Eugen.
Meta's track record on human rights is so terrible, Amnesty International issued a report about their involvement in genocide:
https://www.amnesty.org/en/documents/ASA16/5933/2022/en/
This is the kind of company you're excited about working with?
There is zero chance Meta is genuinely intetested in interoperability, they just want to take over control of whatever community the Fediverse has built up. As their CEO said, people who trust him are "stupid fucks".