With respect to the first part, Mojeek only claims to provide unbiased search results. If they crawl the web and find only one point of view, that’s a reflection of the original sources and not of Mojeek. Mojeek is working fine in that case. Namely, you can find a point of view that you don’t agree with.
What you’re talking about is Mojeek Focus, where you can cherry-pick what sources you see results from and filter the rest out.
And, for the record, if you want to do something similar to Focus but the website is not in Mojeek’s index at that moment then you can do something similar with Google’s product.
However, if Mojeek is not working in some way then I encourage you to explain the issue using one of Mojeek’s feedback channels. I can’t guarantee a response. But, I’ve found Mojeek’s staff to be responsive and helpful with the issues I’ve found and reported.