The thing is that we might do such changes as part of one campaign, for example for our Eberron campaign, but that does not mean that we would be making the change forever for whatever reasons. For example, we have an undergoing Eberron campaign in which orcs are of any alignment in parallel with another campaign where orcs are typically evil, and another one where there are simply no orcs. And that will go on, we will not be making changes overall due to ethics or whatever, but there might be local changes just because of the nature of some campaigns.