now, while I'm not against the idea of 1:1 toku weapons, a lot of them would theoretically be quite expensive, and in some cases it'd likely be more cost-efficient to just make your own
I agree with the rest of what you said, and I don't think anyone else was purposefully bashing the DX role play toys, but this is where I have to disagree with you.
We could both get into specifics, but the long and short of it is, not everyone has the time, skills, and materials to make custom props themselves. Not everyone knows who to commission, and those that do can often charge through the rough depending on the size and complexity of the prop. At the very least, I'm willing to argue that buying a Proplica item and the fees that go with it (shipping, 3rd party, etc) is strongly comparable to the price of making your own to the point where it doesn't matter one way or the other. But I still think the Proplica line will be cheaper, since it's a mass produced item.
Many people would rather buy an officially licensed product than go through the trouble of making one themselves. And personally, I RARELY see a fan made prop that rivals what was seen in the show or rivals the quality of official products like these.