I think even now it's changing. Millennials have been bombarded with ads designed for the previous generation's 'knowledge economy,' which has made us highly attuned to BS. We don't buy products because your ad is laced with Spongebob-level stupidity (really now), and we close your clickbait page as soon as it resolves to an ad-laden screen.
It's the same reason churches which preach 'God cares more about your genitals than starving kids. But check out our coffee bar!' are losing Millennials in droves. You gave us BS meters, now you have to live with it.
I don't think the attention/advertising economy will go away (unless there's a significant economic upheaval [which may well happen with the increasing untenability of labor basis in the face of automation]). But I do think they made their own job hard.