We don't have white crappie around here, only black.
White perch are common and people are not that likely to mistake their name. There are yellow perch of course, but there's no other pan fish around that might be mistaken for white perch.
I suppose that you'll find the land-locked white perch in some of the larger lakes here in southern NewEngland like Quabbin or
Lake Chargoggagoggmanchauggagoggchaubunagungamaugg (Webster Lake
). But in smaller lakes and ponds.... I don't think so.
They're food fish, not a game fish so I could see why people might think that they're a nuisance. They don't annoy me. When I was a kid we used to catch them by the boat full. I still like to go for them in the early spring as they're just about the only game in town.