No, they often do not detail every little step of every process they go through. Quite frankly, this is simply too much information that 99% of the player base has no use for.
The beta will start when Blizzard is ready for it to start, and not a moment before. Posting here, opening tickets, complaining on Reddit, etc. is not going to speed anything up.
As with most things in life, you’re just going to have to be patient and wait.
Also: