Jessica Mitford, in The American Way of Death,* quotes a text that uses compliment when complement was intended, and adds [sic] to indicate this. What’s of interest here is the footnote she then appends:
I do not like the repeated use of sic. It seems to impart a pedantic, censorious quality to the writing. I have throughout made every effort to quote the funeral trade publications accurately; the reader who is fastidious about usage will hereafter have to supply his own sics.
This “pedantic, censorious quality” is sometimes insinuated and sometimes unmistakeable. Sic – not an abbreviation but a Latin word meaning thus or so – can usefully clarify that a speaker said or wrote just as they are quoted to have done. But it can also serve as a sneer, an unseemly tool to mock a trivial error or an utterance of questionable pedigree.