I’ve always referred to it as “intentional disruptions” but same idea. Let’s say you have a vacation that’s starts on the 6th of the month and ends in the 13th. A good strategy is to get a line that has a four day trip which starts on the 3rd. It ends on the 6th, so it is awarded then dropped.
Four day trip that’s starts on the 8th, it is awarded then dropped.
Then bid for another four day trip that’s starts on the 13th, it is awarded then dropped.

So that’s 12 days of work that vanishes from 7 days of vacation.

I’m not here to debate what is better: linear or preferential……but “conflict drops” or whatever you want to call it is largely seen as beneficial to labour and a wise strategy unless you hold like 25 hour 3 day trips to Narita.