T20 has affected the game in many ways but perhaps one of the most important ones is that it has afforded an opportunity to lesser skilled players and hacks who otherwise might never have played international cricket.
While many of these players have been able to carve a niche for themselves, there are many more who have been exposed. Haris is one such player, whose ambition and 'intent' far exceeds his ability. The key to success for such players is to realize their limitations and maximize their opportunities. Haris has neither the power (think Afridi) or timing (Asif Ali) to be a power hitter nor the finesse to be a proper batsman. He instead relies on heedless risk taking and improvisation not caring about the conditions, bowling or anything else. Occasionally, it comes off, but 9 out of 10 times, his approach is guaranteed to fail.
Whatever the conditions, whoever the opposition, if there is one thing you can rely on, its that Haris will come out and slog. There is even less shot selection here than if Afridi had been asked to bat with a blindfold on. Bowl him a yorker on middle stump and he will attempt a premeditated scoop, bowl him a difficult to hook/pull short ball at his body and he will never duck or weave or attempt to keep it down but play whatever shot, forehand, swat, guide to third man, he can. That might be a great quality if you have the skill level of A.B. De Villiers but if your game is as limited as Haris it is suicidal. It is disrespectful to the opposition and to the game and you cannot survive for long with that attitude. People call his batting selfless, courageous and innovative. It is not. It is stupid and suicidal.
At the moment there is no comparison between him and Rizwan. Despite his limited game Rizwan is head and shoulders above Haris in terms of batting and easily the best keeper in the country. His inclusion in the T20 team might be questionable based on reasons other than his batting and keeping skills but Haris is certainly not the long term solution to this problem. At the end of the day Haris' kamikaze attitude is as inimical to the team's interests as Rizwan's selfishness.