How can Americans on the right keep brushing off these threats to Canada as not genuine?

When consistently asked he keeps doubling down. How can the people on the right in the USA keep insisting its bluster and when will you consider this behavior an issue? https://www.mediaite.com/news/only-works-as-a-state-trump-vows-not-to-bend-on-tariffs-until-canada-is-absorbed-into-the-u-s/