In this case it is not ‘Nonsense’ and it is ‘Important’ and the goal IS the leveling of the bed in relation to the nozzle.
If i had, had an iPhone I would have used the Tramming method too, But i used a bubble level.
It was necessary to level the machine and therefore the print head to then be able to level the print bed in relation to the now level print head, there needs to be a datum, how else could it be done?
The iPhone has the technology to get it done without the extra step.
i could have used the paper method or a DTI or an iPhone, but i used a bubble level, and for this method leveling the machine is necessary and valid.
This is a way too heated debate out in the machining communities on the web. But as they keep proving to themselves, there is more than one way to skin a cat.
Pretty soon it will be a moot point here, as soon as we get the calibration upgrade.
I guess I am from the camp that likes things level.