That's extremely deceptive, and (IANAL) I think false advertisement. I'd clarify it.
That's also not HA, that's durability. Concerning.
I have a product to sell you with a postgres interface but p99 write latency of 100 nanoseconds. It's postgres but our driver says "write done" before a write completes. It's revolutionary!
There's a tiny 50,000,000x difference between the now admitted 30 seconds and the previously claimed 600 nanoseconds.