Set up more nodes with the same token

Is this rule still actual?
According to Dylan’s aswer in different dopic there is not more a problem now:

The rule with a single auth token per email address was needed in the early days. In the meantime we have improved our system to handle multiple node on the same ip. Feel free to use the second auth token, or even request more!

Link to original message: Can you get multiple auth tokens on the same email? - #2 by Dylan

So I am a confused a bit here:

  1. do I still need a new authorization token every time when I create a new identity?
  2. do I need a new email address every time when I request new authorization token?
  3. is it nessesary to request every new authorization token via opting-in to the waitlist, filling the storage node operator’s request form?