I read that dasam granth link. The Guru is just describing what it will be like. The Guru is not saying if it is Good or Bad. There is no opinion in what the Guru has written. Only people like us read it and put an opinion to it ie we're just assuming stuff from it whereas the Guru is merely describing.
Not everything in kaljug is going to be bad ie better medicine, better standards of living but what use is all of this if it is not based on dharam? Ie fair enough we marry anyone because we shouldn't discriminate but is this the reason people are marrying anyone OR is it cos of desires. One reasoning is based on Dharma the other is not.
Also when the Guru gives an opinion its pretty clear because he extends to say something like and so X ure going away from God... I think you shouldcarry on reading the Dasam Granth because the opinion bits become clear after a while.
Its basically if what you do is based on Dharma or not.