It's pretty cut-and-dried when you use sentence fragments that aren't part of the feat in question you mean. Sorry, that is not even close to supporting your position.
When I want to use Swordmage warding, I pull out a dagger. But Intelligent Blademaster works just fine with a staff. Intelligent Blademaster is not a swordmage power, it's a feat that works with any melee weapon, not just blades.
And for that matter, nothing stops a swordmage from using any melee weapon they want with most of their powers - they all have the Weapon keyword, but do not require you to actualy use a blade. (It's generally more effective to use a sword, but not required.)
If you think it should all be restricted to light and heavy blades due to flavor reasons, that's perfectly fine. But it is not actually restricted in that way in the actual class write up. It's part of the 4e theme: less hard and fast restrictions, but they do try to give you incentives to do things a certain way (swordmage warding gives you a big incentive to use only light/heavy blades, even though almost none of the other class powers requre it, for example.).
I've thought of doing a dwarven Swordmage who uses Axes (specfically the Khopesh because it is both a sword and an sxe) and a Heavy shield, but it haven't done it because of the number of feats it would take before it became effective.
Actually, it does support what I said if you read the whole section, I used the dots for space and to show where the section was and not mis-representing what was written. I CLEARLY indicated the section, no mis-direction, etc.
It's not a flavor issue, it's in the text. Numerous places specifically state blades. It shouldn't have to specifically use the word "sword" in every instance, it's in there enough for anyone to "get the picture". You need to use a blade as a Swordmage to use those powers, it's at minimum implied clearly even if you don't think it is exactly written. You like to "bend the system", and that's fine so long as the DM allows it. You wouldn't get away with it at my table or many others but that's not a big deal.
However, I will call you on trying to bend the rules and representing it as the rule. House rules are cool, just state them as such.