It's time.
It looks like good scraper dirt, but they might be hitting some rock pockets there. You can't always move through dirt faster with a scraper. Looks semi mountainous just based on the pic. If there's any cobble the rock truck combo works. You put a scraper in the wrong material you're going to lose more teeth than the job is worth!
Is that an attachment? Haven't seen anything like that for trenching before.