The shoreline of Diamond is rocky ledge backed up by trees & shrubbery. I imagine a million boat wakes that hit the rocks would do no damage. A few that wash over them will tend to wash soil, pine needles, small children and so forth back into the lake. Perhaps many boats, not quite on plane & very close together made the wakes larger than normal - I don't know, I am not an expert There was quite a mess in the water after the parade went by. In any case, I did not complain, I just observed.
As far as my comment being "honestly the most ridiculous thing I have ever heard!", on this forum that's quite an accomplishment