I think there is a spectrum between not optimizing anything and optimizing everything. The whole selection vs neutral drift controversy is about placing effects on that spectrum. But of course it is more complex than that -- at different times and different places selection may be more important, and at other times and places less important. So when you look at organisms today, you see evidence for both (no seals on mountains, but human "tails" and other vestigial artifacts). Evolutionary history is very long, even just for mammals (>100 My), so it is difficult to say which part of the spectrum (selection (optimization) vs drift) played the more important part. Modern organisms are at the end of a path that could have taken many branches.