Definitely an issue. As a white guy, I think one of the more valuable skills I learned is to shut up (On occasion, I'm still working on it). Some of my peers have it the other way, their most valuable skill was learning to speak up. Strongly voiced, loosely held opinions can be great for discussing technical approaches if there's trust on a team. But if the discussion is less technical, or the trust is broken, you can start getting issues where other people (often those who have firsthand experience to speaking up being met with hostility) feel attacked or ignored.
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Definitely an issue. As a white guy, I think one of the more valuable skills I learned is to shut up (On occasion, I'm still working on it). Some of my peers have it the other way, their most valuable skill was learning to speak up. Strongly voiced, loosely held opinions can be great for discussing technical approaches if there's trust on a team. But if the discussion is less technical, or the trust is broken, you can start getting issues where other people (often those who have firsthand experience to speaking up being met with hostility) feel attacked or ignored.