It is essential to avoid generalizations when discussing the behavior of people from a specific country or culture. Ukrainians, like any other nationality, are diverse, and individual behavior can vary greatly from person to person. It is not accurate or fair to label an entire group of people as rude or abrupt based on their nationality.
Cultural differences in communication styles exist between different countries, including those in the West. What might be perceived as directness or assertiveness in one culture could be seen as rude or abrupt in another. These differences in communication styles can lead to misunderstandings or misconceptions, but they do not imply inherent rudeness.
In any cross-cultural interaction, it's crucial to approach others with an open mind, respect, and a willingness to learn about and understand their cultural norms. Building mutual understanding and appreciating cultural diversity can lead to more meaningful and respectful interactions. Instead of focusing on stereotypes, it's best to treat individuals as unique people with their own personalities and characteristics.