Or it the experience of cold weather that you were raise to talk small in conversation
Yes, we are raised to talk small because of the weather. Wintertime can be severe in Poland, you need to prepare for it before hand, gather necessary supplies like food and fuel. That is why you need to work hard throughout the warm seasons and not waste time on small talk.
But, when winter comes, you can enjoy small talk without constraint!
Polish men are cold with small talk,
You need to check them out in wintertime too. Sit by the fireplace with a glass of vodka in hand and see if they are still cold.