I rush through strikes because it's easy and an effective way of just getting through it. I have just as good a chance getting engrams from enemies doing anything but strike. It doesn't matter. I just don't feel like wasting time making sure everything is dead when I'm more the powerful enough to ignore enemies and finish strikes in or around 10 minutes. Oh and I'm working on an exotic bounty for bad juju so yeah, I'm gonna rush through strikes, kill enemies that are obstacles and complete the strike.