Nah, other users won’t know who you are.

Well, at least until the database inevitably leaks

https://www.pcmag.com/news/reddit-could-soon-require-face-id-to-prove-youre-not-a-bot

Huffman indicated the platform may use decentralized third-party information providers to verify users’ personal details.

“Part of the promise to users is we don’t want to know your name," he told the hosts. "But we want to know that you're a person.”

Sure, "we don't want to know your name, we just have to know it or have to have another party that we have access to/a deal with know it"