The majority might be bots. Surely for financial reasons the most tenuous definition of "active" will be applied.
Still, its like the old saying about email, I don't care if 99% of email is spam, as long as I get my electric bill email on time, I'm all good.
Twitter might become like TV, where everyone knows everyone watches, but it turns out statistics prove almost no one actually watches.
Its like the endless debates about religion where its a ritual to say X where X is "I believe in Y" and people endlessly argue about the difference between doing something and being something, as if they have to be linked.