The formulation is vague enough that it could mean anything. Maybe the alerts were sent out by mistake which would be good news. But they don’t quite say that. Their statement might also mean that they rather disabled legitimate alerts so that people don’t get concerned. So they might have “cured” the symptoms without addressing the actual issue.

It certainly isn’t reassuring that they keep talking about credential stuffing, even though it’s quite unlikely to be the culprit here.