Where do you get off saying something like that?

You sound like Dr. Atkins.
Carbs are your friend. Forget all the public, low-carb BS. You need high quality carbs to grow, it's that simple. It's typical to gain some fat when bulking, however there are exceptions. If your diet is on point, you can keep bf% from increasing (notice I say bf%, not fat in general). Of course, the introduction of aas, makes for more exceptions. But we're discussing a natty bulk.
lc1987, if your diet is perfect, you should have nothing to worry about. But it's going to take some trial and error on your part to figure out what's perfect for you. If you find fat gains are coming, put in some a.m. cardio. If it's still a problem, play around with the macros.
1buffsob