I was alluding to how man hadith were rejected by the compliers of hadith themselves. Sahih Bhukari collected 600,000 hadith. But rejected all except 7563, with only 2600 hadith that don't repeat and everyday more and more muhaddithseen and scholars find, fabricated and dhaif hadith among those few sahih that he did transmit.
Abu dawood collected 500,000 hadith but included only 4800 in his book and also everyday even from that fabricated and dhaif hadith are being found.
And this is pretty much the case with every compilation of hadith out there.
So you do the math, how many % pass the test of Sahih and then even then many are found to be erroneously labeled as such and this number is increasing daily.
BUT the biggest problem is not even whether xyz hadith is authentic or not. The biggest problem is what people consider hadith to be i.e a source of deen. When there is absolutely no deen in it. Hadith is nothing but a historical record and biographical account of the Prophet's life as seen and told by 1000s of people, which can be right or can be wrong since it is neither ahlam or wahi. Its just the word of man and hence be always up for debate and criticism.