This is no longer true since 2023. The certificate for this service has expired and, most importantly, redirects to 502 Bad Gateway. Also, the service requires an account with phone number verification for everything. Tor would be basically useless for anonymity there.
Previous Status: PENDING
Updated Status: APPROVED
Title: An onion site accessible over Tor is provided
Analysis: Onion Domain https://twitter3e4tixl4xyajtrzo62zg5vztmjuricljdp2c5kshju4avyoid.onion/
Status: PENDING