Neither can I. Im simply trying to make sense of the manufacturers advice. The limiting factor that he stated was hub flange stretch, and his proposed solution was a larger bearing. He made no comment on the spoke holes holding up and Jude is comfortable with high tension in the spoke holes too.

With radial lace, at a given spoke tension, flange force increases with spoke count which is why I have reasoned as I have.

Spoke holes in rims are a given strength based largely on the thickness of rim material, no spoke count makes them close enough to affect eachother which is why their capacity doesnt change with spoke count