I don't understand where you believe it's been claimed that conservatism is unilaterally against all technological progress. It isn't. Conservatism is best understood as a social phenomenon that interacts with technological progress varyingly, depending on the effect that whatever particular technology has on social values any particular group of conservatives happen to priotitize.
X-rays do not particularly threaten any social scheme.
X-rays do not particularly threaten any social scheme.