I guess what I was trying to get across in my post above is that people aren't receiving prompts like the email says. There is no prompt to change or confirm our user ID. So most people will go to the page, log in and think everything is fine. However, it wasn't until I decided to pretend I was a 'new' registrant that I completed the process of confirming a user ID in the new MY Verizon web portal.
After pretending I was a new registrant, this is the email I received from Verizon (even though I have been registered with the online portal for 5 years:
Welcome aboard! We're glad to have you as a My Verizon limited access member. Now you can access your bill online so you can quickly make a payment and set up automatic monthly payments. Please keep a copy of your user ID and sign-in information below for your records.