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Horribly late to this party but I'm going to commemt anways
Spell immunity protects against spells, spell-like effects of magic items, and innate spell-like abilities of creatures. It does not protect against supernatural or extraordinary abilities, such as breath weapons or gaze attacks.
As Lathira highlighted is all the text you need. A kinetic blast is not a SLA innate to a creature but a class feature. No creature automatically gets kinetic blast as a SLA, vanilla or otherwise. Therefore spell immunity never works against it.
Many exist including the https://aonprd.com/MonsterDisplay.aspx?ItemName=Chuspiki