The idea is moderately appealing. I’ve definitely tried to find “that one thing that mentioned that other thing I saw 2 weeks ago” before.

But outside of Facebook (and TikTok/tencent/whoever), Microsoft is right up there with companies I wouldn’t consider letting anywhere near it. And the complete absence of any concept of security in their first version would have completely disqualified it from being trustworthy even without their awful track record. You don’t do something, then “add security” and get acceptable results.