Wouter,

it is all about guessing:
The magazine "voiles et voiliers" guessed that the F17 sloop is much better than all other F104.
Nacra guessed that they won the F104 nationals.
Macca guessed that Frederic sailed a Nacra, than that Frederic is a kid.
Sue guessed that the Spitfire in Texel was a modification.
And a group of people guess that the boat is more important than the sailors ability.

It is maybe not guessing, it is intensionally stating wrong facts.

Cheers,

Klaus