That's my point though, if your buying them you
1.have no clue(which means you likely won't be spending what the tall ones cost any time soon or ever)
2.you're fully aware of what they are and just want a cool looking blade for cheap and still would most likely never purchase a real one or
3. You wanna spend a little to try out a certain pattern, size, style etc. Before making the jump.
If you're in number 3, it's likely the copy will only make you long for the reall thing even more only you'll have a better idea of which pattern, size, style etc.
I know that is the case from experience. I got my hands on a couple sebenza clones, one small one large, and now I EDC large 21 all the time. Basically the way I see it neither of those scenarios are taking anything away from the maker. I know that's not a popular stance to take but it's one I firmly believe.