..... Did you even look at the wikipedia articles I linked?
Please please PLEASE tell me this isn't one of those idiotic "I'M RIGHT YOU WRONG" things. Because I'm not the asshole who's handing out strikes without validating a goddamned thing.
...That guy you're arguing with is the same guy that told me, basically, "NUH-UH! UR RONG!" on a chapter of
Nihonkoku Shoukan when I was pointing out the range limitations of the Japanese Mitsubishi F-2A and he "proved" it by quoting an F-16C range with a completely different loadout (in this case, not even a similar payload - for what good it would do citing the wrong aircraft - with the his being literally five times smaller). Using literally a different aircraft and the completely wrong payload to "prove me wrong."
I haven't been impressed with that guy's comments, to say the least.
This isn't even touching on the fact that you're correct and bladesmithing and blacksmithing are not technically mutually inclusive. And you even get bizarre historical PROOF that you're correct to an even further degree because in the medieval era of what would be Germany today, you had multiple guilds - the knife and sword guilds - and production was regulated. That's why you have things like the German "Messer" (Großes Messer, Langes Messer) which were clearly fucking swords, but they were made by the knifesmith guilds at the time and their handle construction was more similar to that of knives (and they were single edged). The reason that they could get away with it and not piss off the swordsmiths is because, technically, by definition they were just "really long and big knives." And didn't infringe upon the swordsmiths or their guilds.