Yes, even if the world went Taoist there would probably be some individuals promoting neo-Taoism which would be more oppressive and benefit one side and not another. Just as the Romans did with Christianity when they invaded us; they essentially promoted their religion as a neo-Paganism of the time.
Well, it would be relative to that world but I really can't start musing on what an alien religion might be like! One would hope that it would be non-abusive and non-oppressive. It would have to be, in fact, if this is an advanced civilisation.
If we can presume that alien life started the same way as ours did, fighting for survival, then the only way to advance would have been a conscious, coordinated, mass-effort to break away from psychological and biological programming. How on Earth [haha] one does that here, I have no idea. Though I would argue that as long as Capitalism is around, it isn't going to happen.
There is no guarantee that any advanced alien life is peaceful or has good motives, that's just what we theorize and of course hope to be true for any advanced and thus presumably more enlightened civilization. But for all we know, galactic wars are raging as we speak.
If any civilization is visiting us it's likely that they are at least neutral to us, considering we are still here and oblivious. However, like many movies have played with, they could be studying us and our resources to see if it is worth taking what we have. I would say that the chance of peaceful vs aggressive is 'probably' higher though.
With the obvious difference that one would then be tangible and real and the other... wouldn't?I think that the idea that we could be rescued by superhuman beings with superhuman abilities, superhuman wisdom and superhuman enlightenment who would solve all of humanity's problems is nice, but it sounds like a religion to me. Much nicer than other religions, but still the external superhuman saviour thing.