It's too complex an issue to say yes or no.
It's like trying to say that all people from the South are conservative Red-necks. That is far from the truth.
Some Muslims are real assholes, whereas some are extremely gracious. But imagine a religion that still practices the way they did 1200 years ago. Some of the assholes actually believe it all applies to today. Some get really pissed when they don't get their way. Some feel murder is justifiable in come cases.
The point is, not only didn't Bush fully understand them, but neither does Obama. The problem with Obama is his lazy attitudes. He's never paid a price for his actions. This comes from being raised by Grandparents and he doesn't give a shit about others because he was abandoned by his mother and his father. He's self-centered, and thus could care less about real world events. He reminds me alot of my nephew. I don't know if he would be any different if he had gotten the opportunities that Obama has gotten.
The important point is, it's too complex to answer.
The problem is you have a country with millions of people who will answer, not only will they answer but they'll believe they're right without any reasoning to back themselves up with.
I don't like Islam. I don't like Christianity either. Religion seems to be a tool to control people with, and they're quite good at it in Islam.
Yes, some people are looking at archaic Islam. Hardly surprising. They see what the West does to them, and they reject this. They reject modernity because it's brought them so many problems. The old ways work, it gives them the sense of control they can't get in the modern world because the US keeps coming along.
Oh, I have no doubt Obama doesn't understand them. He's more intelligent than Bush, but he's just one guy in a massive apparatus. He's less likely to make the same mistakes Bush made, but the issue is so complex that any human brain would struggle.
Of course he's self-centered, he won the biggest popularity contest in the west twice. He's a politician. What do you expect?
But the problem isn't Obama. The problem is the USA, it's foreign policy having been so bad, so wrong for so long. It makes no difference the leaders, it's the same. Okay, some are worse than others and Bush was particularly bad, even in comparison with, well, every other Republican president that came before him. His father wasn't a bad president, Reagan was dodgy but nothing like Bush at all, even Carter doesn't get anywhere near Bush on the badness scale.
Yet, the politics team game kicks in and everyone assumes that if you attack Bush it's because you love Obama and think his farts smell like roses. It's ridiculous.