Warp scramblers/disruptors still stop someone going to warp. They're countered by warp core stabilisers. The scrambler is strength 2 and 7.5km, the disruptor strength 1, and 20km. Their usage is situational. A scrambler will stop someone with 1 wcs. A disruptor won't, but it'll work at 20km. There's the argument that a 'real' PvPer doesn't use WCS, because that's a 'wasted' slot - you might die without it, because you can't warp. But would you be more likely to win if you use that low for another hardner, armour repper, power diag, nanofiber etc.
Does this mean it is pointless taking 1 worp core stabiliser out?