"Proper science" is practically practiced by no scientist outside of Math and possibly Physics and Chemistry. Biology, medicine and nutrition, for example, are not "proper sciences".
E.g. the lipid hypothesis (cholesterol causes heart problems) does not, and never had, scientific support (In the "proper science" sense), and did have data against it for about 30 years, but it's very hard to find any scientist who would admit it. Similarly, the hypothesis that cholesterol intake makes a significant difference to serum levels was never proved, essentially disproved many times - and yet, it is taken as an axiom but most "scientists".
So, the fact that some "proper scientific practice" would have shown differently is of no practical consequence.
"Proper science" is practically practiced by no scientist outside of Math and possibly Physics and Chemistry. Biology, medicine and nutrition, for example, are not "proper sciences".
E.g. the lipid hypothesis (cholesterol causes heart problems) does not, and never had, scientific support (In the "proper science" sense), and did have data against it for about 30 years, but it's very hard to find any scientist who would admit it. Similarly, the hypothesis that cholesterol intake makes a significant difference to serum levels was never proved, essentially disproved many times - and yet, it is taken as an axiom but most "scientists".
So, the fact that some "proper scientific practice" would have shown differently is of no practical consequence.