The thing is that all these methods are tools. And like all tools they are extremely useful in the hands of someone who understand how to use them.
And dangerous in the hands of someone who doesn't want to be bothered to learn how to use them. That's the problem I have with many internet tools. They are so easy to use that many people, my granddaughter for one, don't bother to look at the whole route picture. To understand the potential faults.
Not learning how a tool works, it's strengths and its weaknesses, is how people get down dead end roads with 60' long rigs. Or drive into a lake.
I like my method of planning, and you are very welcome to yours. I enjoy the level of planning that I do, and I'm sure it is excessive and a waste of time in almost everyone else's mind. Now when I'm not towing, well my wife calls some of my trips 'adventures'. Sometimes there isn't a ditch, or much more than two faint tracks across a field. We have fun.
Some routes I drive so much that I'm sure the truck can find it's way without me. And many others are the first, and probably the only time, I will ever travel that road.
The goal is to enjoy life's journeys, and be flexible enough to stop and smell the roses when you have the opportunity.
Safe travels.