Oh absolutely. It's a huge issue, especially in humanities and social sciences, where the barrier of entry makes it so that almost all published research is conducted by certain populations on themselves. Some people call it "WEIRD" populations, meaning western, educated, industrialized, rich, and democratic (though that "weird" terminology is a bit stinky... I'm looking at the "E" and "D"). Interestingly, China has now overtaken the US in publishing the most highly cited research of any country, though I think their advances are mostly in natural sciences and engineering.

There are also issues with how we qualify good quality or *academic * research. Again, this is especially the case in social sciences and humanities where the standards have been set by colonial researchers who had the means to run expensive studies on large samples. As a result, a lot of research methodologies and ways of knowing that don't align with the western colonial standards (e.g., qualitative research, narrative analysis) get discounted or written off entirely