We covered this at FR long ago, and your post is sufficient in pointing out how misleading your first link’s title was.
Austin gave the same old warning that is the focus of most everything since Russia started invading.
If Ukraine falls then it is likely Russia will keep going and eventually Americans and NATO will be fighting within NATO.
“Austin warned that failing to back Ukraine could lead to direct U.S. involvement elsewhere in Europe in the future.”
Yup. I cited the source. You repeated the same from the source.