What this data also tells you is there is not a single country where 100% of people know how to cook, there will be people like that lady in every country. Some countries will have more as a percentage of the population, others less. Even Poland will have some. Those people deserve empathy, not scorn.

What this data also shows is that going out to eat is unlikely to be the reason for not being able to cook. People in western Europe and especially Spain/Portugal/Italy go out to eat very regularly, often daily, yet these countries rank higher on the cooking map than eastern Europe where people eat out less. That part of your reasoning, is again based on prejudice.

Prejudice, lack of empathy, scorn, I realize that these are negative terms and that you will find them offensive when applied to you, but ... they are the correct terms. Your reasoning is based on prejudice. Your attitude towards that woman was scornful. You show a lack of empathy with people who are not like you.