There are many aspects to consider regarding these news. One is that there is a bilateral agreement between Finland and Sweden regarding co-operation in the times of peace and war (signed 2018 originally). One may read it as agreement of joint defence.
The swedes realized that they are not able to defend themselves (eg Gotland would be lost if anyone would mind shoring with a rowboat and a handgun).
That also means that they would not be able to provide any assistance to Finland if required.
So, Finland has one of the largest inventory of artillery pieces in the western europe (bit over 2000), 500000 already trained conscripts available, approx 250 Leopards, the F-18's (sorry sweden, can't match with your Saabs) and these acquired in the name of a strategy to make invading too costly for the enemy. the situation is therefore way different from Swedens strategy to try to defend for a month or two meanwhile yelling for help (only a handful of forces and no backup).
In this view: Why bother helping out a neighbour that really can't wash your back? The swedes got it. And after a long period of degrading the defence, it costs.
btw, regarding possible help in case of urgency: there is an agreement between the US and Sweden, too. But it is more about training to my understanding, but I wouldn't be surprised if it contained sometihng more as well.