Why does this surprise you? There were large, direct transfers to initially children, then everyone. This was the largest and most effective American anti-poverty program of all time.
No, the current austerity measures are due to the national debt crisis in 2023, before the last parliamentary election. Even Yle acknowledged this beforehand.
You're blaming the "current" Finnish government for austerity measures and implicitly removing blame from the previous administration for driving up the debt in the first place. I would just blame "the Finnish government" (over all administrations).