You must be thinking about yourself and a few others. The giant conservative circle jerks thought otherwise. Sean Hannity was absolutely licking Bush's nuts for all 8 years. Bush could do absolutely no wrong in their eyes. The patriot act? Was to catch terrorists, and if you thought otherwise you were a terrorist sympathizer. The wars? You're a traitor if you didn't like them. Big spending? You're unAmerican if you thought Bush's spending plans were bad.
Much the same as how you're "Not a REAL American" if you didn't vote Trump. But they never explained what values "being a REAL American" involved, it only ever seemed to involve voting for Trump. Which is one of the MANY reasons I say they never voted for ideas, policy, or values. They voted for a name and false promises.
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Nah I never bought into ALL people being racist because they didn't like Obama. But most of it was pretty irrational in the same vein as hating him because he was black. They hated him because he was COMMUNIST, or SOCIALIST, or KENYAN, or MUSLIM. All basically the same irrationality as hating him because he's black.
So no, people aren't racist for disliking Obama, but many disliked him for equally irrational thinking.
Those who did actually dislike him for "policy" were licking Bush's nuts for the same policy.
If you actually disliked much of Bush's policy for the same reason that you disliked Obama's, then congratulations, you're a special snowflake, and not the norm for "conservatives".