There's many great grain-free foods, and many great grain-inclusive foods. I believe people should select what works best for their dog, budget, and lifestyle. My major issue with a lot of grain-inclusive food is actually that many of them are expensive for what you get - on par with a lot of grain-free formulas but with less protein or lower quality ingredients. But then, there's grain-free foods I don't care for either!
And I am feeding about 50/50 grain-free kibble and raw grind right now. It works for us. I like the (Scandinavian) brands we use for various reasons, and it's actually quite affordable. Certainly moreso than the pre-made grinds I had access to in the US. But most importantly, Sam does well on it. Good coat, good poops, good energy, etc. (good appetite too, but as I'm pretty sure he'd eat meat-flavored sawdust, I don't tend to use that as a metric haha). As he's not allergic or intolerant to grains (as far as I'm aware) I'm sure there's grain-inclusive formulas that'd work for him too, but we found this first and I'm not in a big rush to change something that isn't broken.