My response to “I’m just not a political person” is usually either “Bullshit” or “So, you’re just useless then.”
To borrow a paragraph from Sami Fishbein Sage’s essay, Unpacking “I’m Not A Political Person”:
It’s A Privilege To “Not Be Political”
When you say you’re not political, you’re telling on yourself. What you’re saying is that you’ve only been on the receiving end of all these invisible perks the government provides, rather than being on the side that suffers from the lack of them or that is even actively harmed by them. For example, it’s only because of active participation in politics that same-sex marriages are legal. That happened less than five years ago, and it would no doubt be the dream of a conservative Supreme Court to overturn it. Try telling your gay friend, whose marriage status could be in real jeopardy based on election outcomes, that you’re not political and see how they react.