It seems like you find it hard to know if a particular threat matters to you. It might be you want to know exactly who the threat is aimed at and why they do it.
This is not the point of threat modeling : )
The point is to evaluate your needs. And once you’ve got it totally narrowed down, to just the core of your threat protection needs, you can digest threats with a lot more ease.
You won’t even have to rely on understanding the threat in detail.