The quirks of Maximum Ride

Can I just talk about the Maximum Ride series for a second, if no one else will.
I am just so confused by the books.

A lot of the information seems off, almost as if the author forgot he mentioned something previously or the physics go wrong for a moment.

For instance, I am absolutely positive that that the fact that Iggy can feel colors was mentioned in one of the first books, but I distinctly remember them all finding out in either the third or fourth book, when they are in the Arctic.

I spent a few minutes utterly confused. Didnt they already know.

Also they kind of broke physics in one book.

 I distinctly remember Max taking that tracking chip out of her arm and losing all ability in that arm. But then she wakes up later to find no chip in her arm and regaining all ability in that arm. It is confusing all together, but I do belive that she actually did take the chip out of her arm. Leaving me to wonder, how? 

Thats not possible. Originally, it was unclear if that had all been a dream, but it was revealed that it wasnt. Shouldn't her arm still be unable to move. The scientific capability to restore her arm has only recently been progressing, even the scientists in the School wouldnt have been able to fix her arm.

The books are great but sometimes.I think the author forgot what happened and repeated it and became a little confused about certain things. 

Also the series ended on sevral odd notes. First the whole book basically yelling at you to save the earth and beware of pollution and global warming. Then there was the fact that the series ended by killing off all of the planet. Leaving only Max, Angel and Maxs two boyfriends to frolic as they please. I mean, that is no way to.end a book, shame on you.