Sorry but this is wrong. Republicans were always garbage. They were garbage then, and they're garbage now. Trump didn't change anything other than making it ok to bring Republican Talking Points out in the open - Mexicans are rapists, Muslims are terrorists, Black history is false, Black people are criminals, Trans/LGBT community is grooming children, etc. Once Trump opened the door, you had regular GOP fully backing up those points to a T.
You bring up W, the warcriminal that should be rotting in prison as 'good 'ole dubya'. This is the architect of one million dead Muslims - destabilization of an entire region and creator of Stasi Surveillance Regime of Muslims in America (which Obama and others subesquently renewed by the way so don't tell me Democrats are friends here). So, what, he pretended to care about Muslims by visiting a mosque in USA, while dropping White Phosphorous on our brothers and sisters in Fallujah? Don't tell me he did this for Muslims or cared about them - he did this shit for liberal politics in particular because he would rather do what FDR did with the Japanese Americans in US. And if FDR didn't get shit for what he did, I would have been in an internment camp as well during the mid '00s. The fact that Muslim Americans did get scooped up by the surveillance regime is another story but no, W did nothing he wasn't forced to do so out of liberal politics and optics.
The issue is that W's enemies were not Muslims, ostensibly. He didn't invade Iraq to kill Muslims so any further attack on Islamic nations was not needed. Even a dumbshit like W will realize that any sort of attack on Mecca will straight up lead to apocalypse. That was just the racist rabid dogs in the media barking. It was to change regime in Iraq based on lies and deceit, and grant billions of dollars in Oil contracts to his friends, grease the palms of defense contractors and give neocons in Washington their wish to see things go boom on evening news.
In my experience, we outright saw the deceit of Bush in our communities. We did not trust him at all. Him visiting mosque incensed the population further, and Sh Hamza Yusuf got lot of shit for standing with W - which he later regretted doing so. George Bush was enemy #1 of Muslims within America.
Of course you will find idiots that supported him, just like Blacks For Trump, etc. But it was no way a predominant view.