Let me restate my point in a more nuanced fashion after also talking to someone irl. Theories are often parameterized by experimental constants. For the Standa

Let me restate my point in a more nuanced fashion after also talking to someone irl. Theories are often parameterized by experimental constants. For the Standard Model, among many others, the mass of the proton is one such parameter. I assert that each different value of the parameter yields a different theory. The Standard Model is an infinite collection of theories parametrized by the proton mass and other parameters. An experiment that measures the proton mass will falsify all theories in this collection that are outside the value + error bars of the measured proton mass. There is always falsification in a valuable experiment. If you do another experiment that falsifies already discarded values of the proton mass, people will not pay attention - unless of course, you used some different techniques in your experiment which then increases our belief in the previous falsification.