In the UK, the racists would definitely prefer Russians over Filipinos. I can understand why this would be different in the Baltics!
Its generally nothing to do with religion, apart from hostility to Islam. Its not hostility to non-Christians, its hostility to Muslims. What those sorts of people say about Muslims is very similar to what they said about Jews a 100 years ago, or about Catholics 200 years ago. Neither of those prejudices has entirely died (I read an article by a Labour politician whose colleagues used to ask whether he was waiting for orders from Rome) but its at nothing like historical levels.
Mostly talk of religion is a cover for talking about skin colour. Its also an attempt to import American style "Christian" nationalism which i think is going to fail because the UK does not have the same history, culture, or religion as the US: https://pietersz.co.uk/2026/10/christian-nationalism.
A lot of these people are "cultural Christians" which pretty much anyone can be. The range of "cultural Christian" goes from Richard Dawkins to Anders Breivik!