@mogstache, hey it's fine, it's nice to have a little debate over varying opinions, in the army it's basically your superiors are always right
Anyway, it's certainly very true that for some characters, particularly Exdeath and Prishe (more importantly, it doubles as a taunt for Exdeath: Naive, Naive, Naive!), being proficient in Blashing really brings them to another level. However it does not have the same effect for all characters and i still stand by that it is not something that you cannot win without. Take this match for example: https://www.youtube.com/watch?v=TR7re_6EvAQ in the first 2 games the WoL player was using Blashing but it's effect was clearly fairly limited, the Cloud/Sephiroth player was unfazed by the pressure and still pulled of impressive wins.
Before you bring this up, yes there are many videos too where blashing is an important factor for a win, however i'm just saying that it's certainly not critical to know blashing to win, there are other factors that are equally, if not more important in deciding a winner in a match than your proficiency in blashing.
At the same time i actually still agree with you and Kraid that a good player should try to learn and have as many tools in their arsenal because it will almost always be better to be proficient in as many things as possible. i'll also admit that i have used it extensively in my thousands of hours over ad-hoc (however this is also where i get the impression that although it sounds great on paper, in practice it isn't always useful). And when (or rather if...) i get a new controller i will certainly be implemeting blashing into my play again.