None of those references are primary sources or peer reviewed. I've also personally never heard of "the incomer". I feel like I'd prefer to take those claims

None of those references are primary sources or peer reviewed. I've also personally never heard of "the incomer". I feel like I'd prefer to take those claims with a grain of salt. It feels like a lot of work to try and spend time digging in to whether this is true or not. It might be true - but this doesn't feel like a credible source.