Would not characterize it this way. I mainly use Zapier for marketing automation tasks, as do quite a few other people - regardless of whether that is what it is "aimed" at, marketing is a major use case for zapier in practice.
Pushing something into a spreadsheet is certainly a widely used zapier idiom. In 2021, it is capable of far more complex tasks, though.
You want something pushed into a spreadsheet when you receive an email? That's Zapier.