I don't think Musing.io favors technical answers. If Musing.io upvotes a technical answer, it is just be because it was a good answer, not a technical one. I disagree that Musing.io should favor one type over the other. Their goal, after all, is to encourage the quality of answers. And in some cases, there are questions that will be better answered with a technical and fact-based response that is backed by evidence and sources, while some questions will be better answered with an opinion-heavy response. 

The thing is, the type of answer should match the question. So, for example, if a question asks for facts, like, "Who is Steve Jobs?", the answer must also give facts, which will require sources. Sure, saying that Steve Jobs created Apple, Inc., may not require a source because most of us are aware of that (though a source is always better than none, I say). But, saying that Steve Jobs was born on this day, was xx years old, was worth xx billion dollars, etc., and did all these other interesting but not well-known things, will require sources because you are presenting them as facts. And because there is no guarantee that the person talking about those "facts" is right or is telling the truth, the sources help so readers can verify them. 

On the other hand, if a question asks, "What is your favorite book and why?", then a source is not necessary, at all. It's asking for an opinion. So, you can write about Twilight being your favorite book, and even its biggest haters can't challenge you because you were just stating your opinion. No one can challenge whether you are telling the truth or not, because you are the only one who could verify that. And no can challenge whether you are right or not, because you are giving an opinion and there are no right and wrong opinions. 

There are other circumstances, however where sources are necessary, bar none. For example, when you quote from somewhere else, or when you are using other people's words, and basically all other instances where plagiarism could be an issue. 

So you see, it's not about favoring one, over the other. It's about good, well-written answers, which could both be technical or opinion-based.