No, the conclusions are not valid. This person doesn't know the most important experimental results in the field, doesn't understand why modified gravity is bot

No, the conclusions are not valid. This person doesn't know the most important experimental results in the field, doesn't understand why modified gravity is both theoretically and experimentally unsound, doesn't understand that dark matter research is already not a mono culture, doesn't understand that detailed investigations of gravity potentially diverging from the inverse square law already exist and that new studies are planned. This is the equivalent of someone reading some nasty things about C and claiming we need to investigate python for kernel development.