That's still not very large on the individual level. If you're looking at over the course of an about 10-15 minute fight that between all 8 players you were 5-7% behind where you needed to be, that's still a minimal increase. And this person even stated that savage raiding is not something they're interested in doing. If you're doing the hardest content out there then every benefit you can get is something you want, which is also why you would use food for stat boosts when raiding but it's overkill when just doing expert roulette.