Such concepts/topics could be described as either “controversial” or “uncontroversial.”
CONTROVERSIAL adjective: 1: of, relating to, or arousing controversy 2: given to controversy : disputatious
UNCONTROVERSIAL adjective: unlikely to provoke controversy or offense <uncontroversial legislation, such as designating the cranberry the official state fruit>; (M-W online)
Ironically, the very concept of the OP seems to be demonstrated by the difficulty, if not impossibility, of finding terms for a lack of objectivity which are neutral, or “clear of ... ‘good-or-bad’ associations." The fact is that most English-speaking cultures would reject, out of hand, the premise that emotional associations hindering rationality and objectivity, could ever be counted as non-detrimental or as a positive attribute – is it possible that our lack of either neutral or positive terminology for subjective valuations demonstrates our own cultural bias for objectivity (a concept which, like subjectivity, is rather difficult to decisively define).
The English language refers to a lack of rational objectivity with any number of terms, none of which, as far as I can see, are intended to convey positive, or even neutral, valuation.
In science, objective observation is the gold standard – at least, that’s what most undergrads hear in every science class. But what exactly is the difference between objective vs. subjective?
The Merriam-Webster dictionary, defines subjective as: “characteristic of or belonging to reality as perceived rather than as independent of mind.”
The definition essentially says that when something, like an observation, is subjective, it has its basis inside of a person’s mind. When that is the case, the subjective observation is ruled by the life, memories, biases, and prejudices of the person that came up with it. A subjective observation is based on how an individual perceives reality, rather than reality itself. Therefore, this observation could change wildly based on the person making the observation.
Definition of Objective
Merriam-Webster defines objective as: “of, relating to, or being an object, phenomenon, or condition in the realm of sensible experience independent of individual thought and perceptible by all observers.”
This means that the observation originates and occurs outside of the mind of any one individual. When this is the case, that observation is observable by any other person looking at the same situation, provided subjective biases are removed.
prejudice noun: an unfair feeling of dislike for a person or group because of race, sex, religion, etc.
• a feeling of like or dislike for someone or something especially when it is not reasonable or logical. (M-W online)
blind faith noun: belief without true understanding, perception, or discrimination.
Cultural bias is the phenomenon of interpreting and judging phenomena by standards inherent to one's own culture. The phenomenon is sometimes considered a problem central to social and human sciences, such as economics, psychology, anthropology, and sociology.
Some practitioners of the aforementioned fields have attempted to develop methods and theories to compensate for or a culture make assumptions about conventions, including conventions of language, notation, proof and evidence. They are then accused of mistaking these assumptions for laws of logic or nature.
Numerous such biases exist, concerning cultural norms for color, location of body parts, mate selection, concepts of justice, linguistic and logical validity, acceptability of evidence, and taboos. Cultural bias extends on many more fields in the globalizing world. Ordinary people may tend to imagine other people as basically the same, not significantly more or less valuable, probably attached emotionally to different groups and different land. (Wikipedia)