well part of that video definitely came off as a little bit of commercial for Holley;
I understand the jist, but not everyone can afford to buy fancy crimpers;
That being said, the biggest contradiction between your video and my advice was that I do both.
My crimpers do not fuse the wires together inside the connector - I question how you would have to crimp wires such that they look like his example cross section...
I will still do both because it's my belief that the best quality job I can do with the tools I have, is the only one way worth doing.