People usually only leave a bad review when they've had a negative experience with something - when they have a good experience they write it off as the standard and don't feel a need to go out of the way and write something positive.
This tool is better than just standard. I have had nothing but great results using with this too. The customer support has been great as well - quick, and Gary goes above and beyond. I love the option to have emails updating me with recent websites for certain technologies. Most of all I enjoy the list upload - I create my own lead lists, and having it sorted by revenue with the customer support phone numbers and emails automatically scraped for me has been amazing. I've toyed around with Seamless AI, used Zoom Info for half a year, and tested Similar Web out as well. In the end BuiltWith has been exactly what I needed.
Also- yes, it can take a couple hours for account verification. Be patient and give it time.