>First of all, preregistration is not a requirement for the scientific method, which has functioned well for centuries.

As has been said before, the problem is that the scientific method is right eventually. It can and often does get stuck for decades at a time, if someone with, shall we say, durable beliefs gets tenure, amasses political power and shoves their rivals out of a field. The amyloid hypothesis is just the most recent example.

Modern metascience practices (preregistration, blinding, banning "garden of forking paths" subgroup analysis, demanding high p factors and larger n) don't replace the scientific method, they're supposed to speed it up! But, by definition, these are all political issues, so they attract political arguments.