This seems to be real massive data leak, and significant. Copy and paste from a recent comment [0] :

"There are multiple reports of this, including two earlier HN submissions in the past two days: https://news.ycombinator.com/item?id=31968327

https://news.ycombinator.com/item?id=31962526

Twitter thread:

https://nitter.kavin.rocks/kendraschaefer/status/15438559893...

Mastodon:

https://mastodon.social/@SexyCyborg/108588110265985290 (Naomi Wu)"

[0] https://news.ycombinator.com/item?id=31977355

Edit : More independent verification, from Wall Street Journal and MIT Technology Review reporter, Karen Hao 郝珂灵, that this real data about real people, at https://twitter.com/_KarenHao/status/1543949945614393344