Actual originalism is impossible, even if you isolated yourself from social cults seeking to cultivate corrupt judges like the federalist society.
All humans have inherent biases and lenses and perspectives. Do jury duty sometime. Actual factual recollections vary in details and even factual accuracy
In an absolutely pure form? Sure, but that's true of most good things (e.g. justice). That doesn't mean the concept is bad or that shouldn't be pursued to the greatest degree possible, especially when the alternative is to have someone interpret the law like Humpty Dumpty when it suits them (https://www.fecundity.com/pmagnus/humpty.html).
All humans have inherent biases and lenses and perspectives. Do jury duty sometime. Actual factual recollections vary in details and even factual accuracy