Well I suspect you're not a scientist ... then it's just your opinion
which is exactly what this thread is about.
So YES ...Reality is subjective...and perception is relative . That is a widely shared opinion with a variety different people .
My opinion, regarding your comment, is that you're looking for something to disagree with.
So baby be my guest, disagree with anything you want. If that's what you need to feel in control..then
GO FOR IT.
You don't need to be a scientist, all you need is to be well read. Articles on genetics are pretty easy to find in periodicals like Scientific American, Journal of the Americam Medical Association, Nature, even Wired. The PBS series NOVA has done multiple shows on it.
This is not subjective, it is quantifiable and repeatable. Its not theory, its measured and observed.