Yeah, I suppose the relative productivity of one version or another doesn't really change the perception of anyone but myself. If someone identifies as a feminist, that's exactly what they are, even if another feminist doesn't agree. This is probably the case with any philosophy. Which is why I generally won't assign any -isms to myself. I suppose I consider myself a feminist as I believe in the equality of all human beings regardless of gender, and I do acknowledge there has been a bit of an unbalance in that respect for a very long time. But I've never protested anything or boycotted anything based on this belief so I'm sure there are feminists out there that would say I'm not one of them. I could argue that its not necessary to do so in order to be a feminist, but will it change their mind? Not likely.
In the end, it becomes a label like any other. And gets assigned like any other label. By the individual. If you define feminism as a philosophy of gaining equality for women then anyone standing in the way of that is 'not feminist' including anyone that identifies as a feminist but still stands in the way. If you define feminism as a philosophy of gaining superiority of women, then anyone standing in the way of that is 'not feminist' in the same way.
From my standpoint, its easy to see which of these philosophies is 'more productive' but I must confess that anyone who doesn't see it that way is unlikely to be convinced by a mere male's opinion on the matter. As I'm well aware of the relationship between equating anything with fascism and losing arguments, I'd probably just leave it out.