On second thought W gave us Roberts and Alito, so perhaps you are right - maybe this is an intentional manifestation of the Bush family’s infamous principle-lessness.
Of course, W only gave us Alito after the uproar over his nomination of Harriet Miers caused him to pull that one and nominate Alito.
And there were rumors that he wanted to nominate Alberto Gonzales, but some internal objections might have nipped that in the bud.
Had GHWB not ridden into the White House on Reagan’s coattails, none of them were ever have gotten close to the presidency.