Obvious Leo wrote:
"It is the THEORY which determines what the observer will observe"....Albert Einstein
"All of our observations of nature must first be filtered through the prism of our human consciousness"....Werner Heisenberg
No one is saying that there aren't subjective components to all of our observations. The problem is that you said all evidence is subjective, which is clearly a misunderstanding. What makes something subjective is that it's determined by the subject. Thus, according to my understanding of what you're saying, when we observe things in the world, those things, be they evidence or something else, are determined by our view of them. While it's true that the observer does arrive at their own view of things, i.e., from their own standpoint, but this does not mean that one can interpret things any way one likes. Suppose I said that I see two moons in the sky, does my interpretation make this observation correct? No. Why? Because the evidence, which is objective, and seen by almost everyone, says quite the opposite regardless of my subjective interpretation.
So my question to you is the following: Is there one or two moons that revolve around the Earth? If you say one moon, then what's the evidence of that? Our sensory experiences tells us that there is one moon, i.e., the facts of our sensory perceptions tell us this. What is subjective is dependent upon the subject, which is each individual. Is the fact that the Earth has one moon dependent upon what I think or feel about the moon, or are there independent facts (objective facts) existing quite apart from us (objective things) that our sensory perceptions perceive? You seem to think that because I perceive this or that, that that makes it subjective, but again this is wrong. Subjective facts mean that the fact is dependent upon us for its existence, but the moon is not dependent upon us for its existence. If the moon was dependent upon us for it's existence, then when we cease to exist the moon would cease to exist, but we know this isn't the case.
An example, of a subjective fact is, I like oranges, I like blue, I like large homes, etc., these facts are dependent upon what I think or feel because they do cease to exist when I cease to exist. This is key to understanding what subjective means, at least partially.
Your quotes of Einstein and Heisenberg do not support your position.