blind relays are optional and literally only relevant for specific really difficult carrier grade network conditions where direct connections might not always work.
...but even then, relay is really dynamic and any dat peer is automatically and dynamically participating im the process ..p2p, not federated
i mean - network situations can be complicated and problematic but i would say pretty much yes in the sense of in prwctice it almost always works - 100% is too strongly framed, but it is really reliable, feel free to try.
if you dont want to use the stack and try programmatically, try keet messenger or holesail.io app to experience the reliability
blind relays are optional and literally only relevant for specific really difficult carrier grade network conditions where direct connections might not always work.
...but even then, relay is really dynamic and any dat peer is automatically and dynamically participating im the process ..p2p, not federated