Walking your lab without a coat

Hi! We live in northern England and have a 2.5 year old healthy working lab. For the past few day it’s been minus 6 degrees c so our guy hasn’t had a walk as we thought this would be pushing it (just a lot of scent games in the house to tire him out and work his brain).

It’s been 2 degrees c today so we took him out for his usual walk. We don’t use a coat, as he absolutely hates wearing one and unless he gets wet he shows no signs of him being too cold (shivering, lifting paws etc).

Anyway today on a walk a man pulled his car over to yell at me for walking my dog in this weather. He also commented how I was all “bundled up” so it wasn’t fair. I didn’t really know what to say so I said thank you for your concern but I promise he’s fine and waited for him to drive away.

What are your thoughts on this? Happy to take things on board and if I should be putting him in a coat I have no objections to that, I just know he hates wearing one and you’d think his two layers of fur would be sufficient!

PS. The roads have salt on them so I am careful to wash his paws when we get in but that’s the only thing I’ve been worried about really!