Change the city name. Sure. Do it.
And breach the Columbia River dams and let the salmon return...
But don't white wash his name in history. Some kind of hero for discovery of a place that was known?
Nope millions were killed by the sickness he brought with him. Let alone the horrors that he caused the native inhabitants.
Let him be listed with the genocidal killers of history.
What about California having bounties for men women and children? Indigenous people were exterminated for profit not that long ago...