Am I overthinking this?

Hello I am a deconstructed Christian, consider myself an atheist now. So the other day I was speaking with my co worker & she was talking about going to church, so she asked me if I went & I told her no I’m an atheist & of course my (baby boomer) co worker thinks it’s satanic & says I should just tell people “I’m not religious” instead. This rubbed me the wrong way completely because why do I need to change the verbiage I use to label myself to make someone else comfortable? That’s not my responsibility. Anyway, I held my tongue & moved on.