Basically, sails with variable geometry require a good eye and active trimming. Many of the resources that my sails use wouldn't make sense in a windsurfer. This is the exact reason why windsurfers evolved into a system that modifies the sail shape more or less authomatically.

This system, however optimal for windsurfers, doesn't seem to have real possibilities to work reliably in a bigger boat. The closer matches to be found here (and with many restrictions) are in the Moth or in the old Finn. But the manual trimming is not abandoned, even in this cases .

That's why you are correct only with regards to windsurfers and not to bigger boats.

One detail: the technology does look with that of a 1985 windsurfer, but while windsurfers basically stopped there, we have evolved for another 20 years.