I am not as dismissive of Bush. He was indeed a passionate conservative, and passed the most important social legislation since Johnson: the establishment of Medicare Part D (prescription coverage).
Bush was, and is, pro-immigrant. He had the support of many Hispanics.
Unfortunately, Bush will be remembered for the wars, our countries response to 911 that was supported by almost everyone in the beginning. As with Johnson and Viet Nam, Bush couldn't find a way out. (neither could Obama or Trump).
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But, yes, 911 changed America and the world. Our internal and external reaction was the greatest over-reach ion US history. We've spent trillions overseas and on internal security. And we prevented 2001 style terrorist attacks, while totally failing to prevent cyber attacks, and foreign influence on various US groups (e.g. the NRA).