Then I would suggest you actually read the links I posted, as well as doing some side research. There is compelling evidence of levels 50%+ instead of the 2% your link mentions. My point is that this controversy has compelling evidence on both sides, and so one side has no place being taught as fact.
Oh please. We teach in science what we believe to be the truth at the time of the teaching. Doesn't matter if it's truely the whole story or not. If we wait to teach anyone anything until we know the whole story we would never teach anyone anything. I did read plenty of authoratative sources on your material including Ohmato's own summarys. His main discovery is bacterial mats from 2.5billion years. He pushed back the age of when life existed quite a bit. But if you will notice my link those bacteria are in fact predicted. Until the appearance of the autotrophs and oxygen production there would have existed anerobic bacteria which exist even today and are still some of the most primative. As far as Ohmato's atmospheric conclusions I won't comment because I don't have the time to see if his paper from 1993 actually had any bearing on science after it was published. Frankly, considering of course that it was published nearly a decade ago and there has been very little other research I conclude that the data or theory were disregarded because of inconsitencies or errors. Ohmato is in fact one of the supporters of the snowball earth theory.
And has Uthomas has already pointed out. Abiogensis has little to do with evolution. Evolution is exclusive of abiogenisis, it in fact does not care how life started, only what happened after.