Yes, it is obfuscated, the pairing of real person and random id would be much more work, than pairing phone number with real person, and you can throw away and generate as many as you want, whenever you want - unlike your phone number.
Still beats using your phone number for chats, or your SSN in place of bitcoin wallet.
Honestly, I'd say it's much worse than using your phone number or SSN. Sure, an SSN makes it easier to tie an identity to a person, but it doesn't instill a false sense of anonymity in the user.
Again, for the practical example, people bought and sold bitcoins with the broad assumption that it was anonymous. It's a widely understood falsehood, yet new people almost universally believed it was anonymous and safe from law enforcement/the tax man.
Pretending that a random yet static ID adds any level of anonymity is simply dangerous. At best, it keeps honest people honest; like locking your door but not the bay window next to it.
Still beats using your phone number for chats, or your SSN in place of bitcoin wallet.