The inability of Apple to support current browsers have nothing to do with the tablet browser. On the other hand maybe they don't want you to use a tablet, but an iPhone?

Hell, FF2 is still out there and 20-30% of the people are still eating their breakfast in the morning in front of IE6. The tablet browser has better standard support than IE6 and 7 put together and will get better, but not today and because Apple didn't do their job to support FF.