Lithuanians hardly have a perception of Belarusians as "scary foreigners" due to enormous amount of shared history, culture and even cuisine. It's foreign in the sense an Irish is foreign to an English, or a Norwegian to a Swede.

Lithuanians did live under the not dissimilar regime for half a century though and they understand how safety is done in such circumstances. The power station had numerous incidents during construction and commissioning, including human fatalities. Can't blame them for taking precautions.