Re: Opinions please abuse or different parenting?
Sounds cultural to me. I would maybe mention to the kids that maybe they shouldn't be playing by nails (shoes or not) and that they should wear a helmet when riding bike to be safe. If they aren't using proper carseats and you don't want to talk to him about it, then the law will catch up to him eventually. Carseats aren't as big in other countries, and barefoot seems normal (I am normally barefoot outside).
As for the comment when you complimented him, he may come from the mindset that women or women who aren't his wife, are not suppose to speak unless he speaks first. Or maybe he was nervous/scared. So many things could be going in his mind.