Elsewhere on social media was a thread about a lady born in the 1880s and downthread a poster asked, did this lady have any descendants? The OP, a female historian, replied, "No, she died a childless spinster."
This caused some considerable uproar, with several posters vehemently attacking the OP for insulting the lady in question by using that phrase to describe her. The OP returned to say she was merely being plainly factual, and that she is, herself, also a childless spinster and sees no insult in either word.
(A great many on the thread appear to be American, is it perhaps an insult there but not in the UK?)