I wonder how much of this is due to people realizing that interacting with the types of people who are "engaged" by these big brands on facebook doesn't lead to

I wonder how much of this is due to people realizing that interacting with the types of people who are "engaged" by these big brands on facebook doesn't lead to interesting conversations? The small amount of such brand engagement I've witnessed has reminded me of the rule of thumb: "just pretend comment systems on large websites don't exist."