I'm sorry but the majority of that just simply is not true.
I own one myself and the screen is great, no dimming or pinkness in sight, the speaker is easily the best around by quite some margin (not quite as good as my old M8's but they had to put that fingerprint sensor somewhere I guess and it is a very useful feature, notifications are great and comprehensive (quite frankly I wouldn't want the screen coming on every time you get an email etc, that sounds like a terrible idea) and don't like the keyboard then swap it out for another.
Fair enough you prefer the iPhone but these seem like some spurious and ill informed reasons to do so for me personally.