Your text is encrypted on your device before it ever reaches the server. The server stores ciphertext — it has no keys, no plaintext, no way to read what you wrote.
Don't take our word for it. The source is open and the server is self-hostable — run your own instance if you prefer.
Share a thought anonymously with a single link, or open an encrypted thread and invite someone to reply. No accounts, no tracking, no metadata beyond what the protocol requires. Just share your link and speak freely.