I think you're misunderstanding what I'm trying to say. I'm not making some kind of abstract point: I think that there has been an (intentional?) tendency to exclude many places (the pub, the workplace, etc) from the sphere of politics - explicitly political conversations are discouraged for the sake of harmonious relations and the like, and more technical / theoretical conversations are avoided for fear of alienating or irritating people.
But this ignores that in these spaces, people have political conversations every day: they talk about the trains being late or too expensive, they talk about their groceries increasing in price week by week, they talk about how there's loads more people begging on the street in town than there was a few years ago, they talk about their kids being unable to get into a good school. They talk about how the muslims round their neighbourhood don't seem to want to integrate with the rest of the community, and how now there's only Polish grocers where there used to be hairdressers and hardware stores.
These are the political conversations that matter most, and in the absence of us having conversations that link them to big-p Politics, the vacuum is filled with explanations culled from Daily Mail front pages, channel 5 misery porn documentaries and loudmouth right-wingers.
There's no non-political spaces, and IMO pretending there are risks ceding those spaces to our enemies. Which doesn't mean we should lecture people about Marx over our morning coffee, but nor should we be avoiding discussing politics in our everyday lives, or confronting bullshit when we see it.