I personally don't see how this would be the case, from what I've seen Mojang only actually receives messages that are reported so I don't see how that's "collecting data" since the users are the ones who decide what gets sent to Mojang. There could be more policies in the future that help to actually gather data, but for now I don't think that's the case, nor what they're trying to implement.But this problem just does not exist in a relevant scale in Minecraft and is nothing more than a shady excuse for Microsoft to tighten their grip on our privacy. The only thing they want to achieve with this is gaining absolute control over the playerbase and maximizing their profit one day buy collecting our data and so on.
Similarly, the only way I see that they would start "banning opposition" (reading that someone's mentioned TikTok), would be if someone started reporting messages like "Mojang sucks" or stuff like that, which happens in like every single social platform, so I don't think this is a case of Microsoft trying to be greedy or controlling either.