It's common for most of the DC major hitters to go through changes. Not for story reasons but to goose the sales. So Wonder Woman isn't alone in this regard. It's just that over her 75 years--and certainly in the last 50 years--Wonder Woman has a lot of ups and downs when it comes to sales, with the publisher reacting by introducing a new change. The more desperate to goose sales, the greater the change (often throwing everything out the window and starting again).
A side effect of this is that, in a room full of Wonder Woman fans, chances are not one of those fans will have started reading the character at the exact same time. So for each of them, the character they were introduced to (the one they recognize as the true Wonder Woman) will be different.
So you have the conditions where WW is most likely to go through yet another change and that's not likely to please a large number of fans.