Curious users can find the fediverse anyway if there were interested in changing social media platforms. Meta has NO good reasonable use to integrate the fediverse. Compared to Metas cumulative social media user size we are but a tiny hub of users. So here again: there is NO good reason for them to just causally go "oh hi guys, let's be friends!" The only reason is to extinguish competition before it gets larger. It's like Starbucks slapping down a store next to your local coffee shop because "wow we both like coffee, let's be friends so our customers can enjoy coffee together and have a talk!" It's a deceptive strategy.