Why shouldn't they receive their absolution? No one has time to evaluate every idea they come across. As a matter of practicality, one has to put poorly communicated ideas or those for which the data collection is sloppy or otherwise badly done lower on their priority list.
People's lives would've been saved if Semmelweis had been taken more seriously, but how many other advancements would have suffered if everyone followed up on every poorly thought out and represented idea and didn't prioritize?