Unfortunately, the net effect is that the Ahadith (and perhaps the Sunnah) take all the blame and end up protecting the Qur'an's reputation as a truly perfect scripture.I mentioned the Hadith and Sunnah because it's true that not all instructions to Muslims can be found in the Quran. So when an apologist claims "not in the Quran", one has to remember these other sources as being legitimate Islamic scripture.
When in reality it is in bad need of a lot of criticism.