I first estimated 1% but decided that that is much too high.

But let’s make an experiment. Let an average high school student memorize these names:

A Calabi-Yau manifold is a compact, complex Kähler manifold with a trivial first Chern class.

And now let her explain what the above definition is about.

If anything, naming them after people (especially people with uncommon names) makes them easier to google.