Well I don't know. While I agree with the point about why are they asking where are they going, think about what this virus has turned you into mate if this is now your reaction. That someone's a weirdo asking for directions.
three weeks ago you wouldn't have thought such a thing.
So, let's say when the lockdown measures are lifted, are you going to just go back to normal or are you going to still be wary of people? It'll be the latter, won't it?
Like on Tuesday I was on my bike ride. I had a good idea of where I was going but wasn't 100% sure where this path led out. I had to wait for this couple walking their dog to come through the gate and they were a good 5m away from me, at least. Since they'd just come off the path I asked them if it led out to a certain village (it did in the end, my sense of direction is pretty good) - they looked at me and then just rather rudely turned around.
I hadn't approached them. I hadn't gone up to them and got in their space. Yet they still reacted that way.
Fear, mate. You can't live in fear and let fear control you. You can be wary and cautious and follow the government guidelines etc without letting the panic/instinct part of your brain take over. Not saying you did in this case and I agree it's weird for someone to come right up to you, but really, have they done anything wrong?