6,000 cups of broccoli a year is probably too much.
Four cups of broccoli sprouts a day may exceed the safe dose of the cruciferous phytonutrient sulforaphane.
There is also the issue of the goitrogenic compounds in raw cruciferous. See my video Overdosing on Greens. We can also drink too much tea (seeOverdosing on Tea), eat too much of the spice turmeric (see Oxalates in Cinnamon), too much of the seaweed kelp (see Too Much Iodine Can Be As Bad As Too Little), and overdo coffee when pregnant (see Caffeine During Pregnancy). And that's just a smattering of the hundreds of other videos on more than a thousand subjects.