You’re wrong; they have definitely given plenty of info on the planned crafting system:
They’ve been very clear. And the only additional info we’ve had since is that actually creating new weapons from scratch isn’t planned, and that rerolling the perks is restricted to only one of the two (as per latest community update).
So based on FS’s info we’ve got a pretty good idea what they want the item aquisition & upgrading system to look like. And it’s looking to be really shït, because the end result is that you’re going to be fully and completely at the mercy of RNG to get a weapon of the type you want with good stat bars and two perks you want. And I, as well as the majority of the playerbase so far, find that to be bad. So that’s why we’re giving this feedback. On the literal and clearly stated plans of FS.