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That depends on Google being both honest and accurate. Perhaps they have been so far, but my concern would be that a re-written title would cause quality content to get passed over by many viewers as undesirable/irrelevant because some algorithm misunderstood/misinterpreted what it was looking at, or because google wanted to subtly discourage people from content that competes or disagrees with whatever Google is attempting to promote.

In a better world, algorithms would be perfect and there would be a lot of healthy competition in search engines and google would be incentivized to provide users with the best possible results. In our current world Google's algorithm can't identify obvious spam well enough to keep it out of their results and there are no major search engines that haven't been lifting results from Google directly or indirectly and repackaging them as their own, so google has no pressure to do anything but promote whatever is in their own best interests or keep their results accurate and free of spam.