That is exactly right - When did that change? Darwin was wrong, but at least he listed his errata - That is what science does... or used to do anyway...
Darwin was certainly not wrong, except in the sense that he knew nothing of genetics, much less DNA analysis.
But his basic theory has been confirmed innumerable times: 1) descent with modifications (mutations) and 2) natural selection ("survival of the fittest") accumulating small changes over many generations can result in separated populations which no longer interbreed and are therefore classified as different species.
Darwin produced no theories regarding origin of life on Earth, but merely speculated on something possibly growing within a "primordial soup".
Today there are several working hypotheses on origin of life, none strongly confirmed, but Darwin's basic evolution idea is considered as much fact as theory.