His/her statement was “However, most wish to win at any cost and their rebuttals of the defenses closing argument generally always crosses over all reasonable lines.” In that statement he/she did not say it was just some prosecutors that are corrupt; instead the statement was that “most wish to win at any cost” and that their arguments “generally always crosses over all reasonable lines.”
The OP also said “Your attorney, as part of the local frat club of cronies, are in it to uphold the system and make money. This is why prosecutor abuse and misconduct is seldom challenged in America and allowed to be the rule, instead of the exception.” (Underlining added).
He or she is therefore advancing the proposition that on the whole prosecutors are corrupt. That comes through very clearly given the portions I've underlined. And I take issue with that characterization that paints most or nearly prosecutors as corrupt. I have lived and worked in a number of areas of this country and thus likely have a broader experience with different legal communities than most. I lived in one area in which corruption was indeed a significant problem that permeated government as a whole, including prosecutors and the courts. So I know full well that it exists in this country. But I have also lived in several areas where the government, including particularly the prosecutors and the courts, were largely free of corruption and the justice system functioned reasonably well. My experience thus tells me that most prosecutors and courts in this country are likely reasonably free of corruption; sadly, however, a few are not (some of which are well known and yet have never been cleaned up). So I object to painting prosecutors as a whole as corrupt, as the OP clearly did.
I am less certain that the OP has similar feelings about the justice system as a whole (indicated by my comment “I guess”) but the fact that his/her last sentence suggests that defense attorneys and the courts conspire to allow prosecutors to be corrupt certainly hints that the OP feels that way. And I object to painting the system generally as colluding in corruption for the same reasons I gave above.
One does not have to be victim (or a relative/friend of a victim) of a bad prosecution to recognize it. But to get a accurate impression of the whole universe of lawyers and judges in this country you need to see a number of them at work in different parts the country. What I see too often on these boards are people who have had one bad experience themselves with the justice system and then extrapolate from that one experience that all prosecutors and courts are that way. Those who form their views off only one or a very limited set of experiences are often going to biased and not have an accurate perception of the system as a whole.