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Yannis,
If you hone it without tape you will still have a 16 degree angle because the spine will were with the edge thus preserving the angle.
What you probably intended to say is “if you hone with...

Yanis,
I will cannot argue this point… go measure a few razors and prove it to your self.

Each manufacture may have different spine width but whatever it is they maintained an angle between...

It’s a known standard for all razors… (well most):
3/8th and 4/8th razors have 2/16th inch spine width
5/8th and 6/8th razors have 3/16th inch spine width
7/8th and larger have ¼ inch and larger...