I know, the demon child first appears in the first arc of the series, but I made a conscious effort to make it more understandable for 'first time readers' of Berserk. For instance, reading through the first arc we have this 'guy named GUTS' and then in the same arc, you have 'Guts and casca's child, tainted by Femto/Griffiths raping of casca' and THEN in the second arc we would introduce Griffith and Casca. Kinda 'wack'. ;)
But youre right, it SHOULD be fixed, but it wont. Unless I get a lot of complaints about it or something, I think it works.