Why would they risk launching three server simultaneously.
Sounds like asking for trouble. DDOS protection needs some adjustments etc, launching 3 servers is just risking more than they should.
Although we're dealing with people who have the entitlement to demand
Vanilla WoW free to play after months of hiatus from risking their bacon,
a fresh server to begin the experience on
that fresh server released immediately alongside the old server ignoring and technical complications it may have.
Many of us are just happy to play, so the whiners can whine and go play elsewhere.