If he hangs around sites like this, he probably won't be an idiot as far as safe and sane is concerned. No matter his background. I assume he isn't an idiot because he got you interested. Every single culture on the planet was super backward and patriarchal just a few decades ago. Woman's cultural emancipation has been extremely rapid in the west. And now with Internet it will and is spreading at an increasing pace. We're still right in the middle of it in the West, so we're really not in a position to pound our chests as some kind of example to envy.

My point is that I don't think you should worry. If he's a relationship Neanderthal, you'll realise it really fast. You could simply ask. I'm convinced he has thought through how he values women and has a ready answer. What straight man hasn't? If he's not concrete and stays on the level of "equal value but separate domains", you know he's bullshitting you.