> Your statement would ultimately be an oxymoron too.It demonstrates that the very notion of objectivity is flawed. Objectivity is a hyper-simplified model of external validity[1]. It cannot be measured as a boolean variable or by a real number. Neither black-and-white nor shades of gray could help with measuring objectivity. It is much more tricky. It is as tricky as the reality itself.
If someone wants to deal with the data from reality, they need to track all the way from reality to the data they got. Where did it come from and how it was processed. It is the only way, and it has no place for objectivity. I mean all your thoughts will have no references to objectivity, they would deal with ways how data might become biased or falsified on the way from a reality to you.
> There are observations that are more objective than others and those that are plain objective.
Can you give an example of a plain objective statement? I can think of no such statements. 2+2=4? It is a math statement, it is not about reality, it is just a part of definition of an addition.
Or maybe "apple hit Newton on the head"? Is it an objective statement? Did apple bounced and hit him on the shoulder also? Was someone sitting on the tree dropped apple on Newton's head? Was Newton leaning on a trunk of the tree? Did he tried to dodge? How many details were omitted? Who decided that these details are not important enough to report? Was he objective while deciding? How can anyone measure his objectivity?
The only way to explain why this is an objective reporting needs resorting to a beauty of a narrative of a sudden insight induced by a seemingly irrelevant and mundane event. And this narrative "decides" what is important and what is not. Was the choice of this narrative "objective"?
What if we choose a narrative of a God's blessing? Like Descartes did when he invented a coordinate system. If we did then the choice of details to report would be different. And it would be an "objective" reporting also.
Pure data (like numbers in a table) have no narrative, so maybe it is objective? But when we do not know the narrative behind the data, we cannot make inference from the data. So pure objective data is useless.
Everything is subjective. Though there are cases when it doesn't matter. Cases when we do not need to keep an eye on a narrative, on a process of data gathering and processing... But even despite the majority of cases are of this kind, a critical thinker needs to keep an eye on a narrative and on a process of data gathering, because it is his second nature: you never know when this skills will become needed, so the only safe way is to use them constantly. Make them automatic, so you need not to think about it.
[1] https://www.scribbr.com/methodology/external-validity/