Why use the term researcher instead of reporter?

[tobie]

The term researcher implicitly narrows which reporters this spec applies to (even if this is not the intent). For example, a developer discovering a vulnerability while simply using software might not feel like they're in scope of this spec as they're not conducting research.

[mrybczyn]

We can go with 'Reporter'. It will fit all places where the term is used in the document right now.