Bringing it back to topic… my experience in HEL in 2023 ish was a similar combination to the OPs- short transit, minimal stay in Finland and some of the most unpleasant (combative is the word I used) border guards I’ve ever met. AUS/UK passports. I was born in Norway which culturally can cause an issue but for convoluted reasons my passport doesn’t reflect that

I’ve resolved to avoid Finland as far as possible going forward because it was just unpleasant and unnecessary