[castlecrasher2]

>"Semmelweis [...] may have been responsible for the deaths of millions"

How does that not strike you as unnecessarily harsh and unwarranted? The statement reeks of viewing history through the modern lens, and the author doubles down on the next sentence suggesting that the scientific community would have somehow opened their eyes if only Semmelweis had either not been born or had been less of an asshole, or something.

[watwut]

"History through modern lens" seems to be a bit out of topic complaint.

The rest of paragraph explains why author thinks he was wrong. It would be interesting to read historical dispute, but your complaint seems to be less about different interpretation of history and more about making criticism of past personalities taboo.