I don't think it's right at all at least to any systemic level. It's because Finland has a load of nuclear (~50% of all generation esp after the EPR opened) and also a lot of wind power.

Nuclear is not well suited at all to being curtailed, I also suspect it would be worth paying negative prices to avoid it to a certain level - the French reactor cracking problems (earlier design though) are hypothesized from what I read to becaused by a lot of demand curtailment putting stress on the various metals as they heat and cool frequently because of reducing output.