He is correct in what he says, historically most of science has been and will be shown to be wrong.
Examples such as the Pythagorean thereom and Newts law of gravitational acceleration (on earth) are the exceptions that make the rule.
Most of science is just our attempt to model reality. As our knowledge grows, our models improve, through trial and error. With science we continue to expand our horizons! Those that are scared of understanding who we are try to force us to not explore but to remain locked in a cave.
has already been replaced ...
You are about 92 years behind in your studies ...
What does that even mean? How do you measure "most" of science?