Of course it's a hyperbolic statement, i am frankly surprised that i am having to explain that "No i'm not saying these people literally go home after games".
I am saying that on balance it's unlikely that these people spend a great deal of time opining about the state of the club on social media and fan forums. And whilst I am not trying to use them as templates, yes i have worked with fans down the years who are season ticket holders go to every game at the Emirates go for a few pints at nearby supporters pubs afterwards and then will go off and do things like have dinner out in London with the missus or go home and have friends round to entertain, and unless prompted by myself don't tend to talk about Arsenal during the week unless they are offering me tickets.
They have opinions about lack of spending, about the manager etc.....but they won't protest about it because it's not their thing.