These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
Similarly, the depiction of the Jewish prisoner or rather, Sir Percy's depiction of the Jewish prisoner might be read with some discomfort by modern readers.
The sequel novels
Foe Yay: Chauvelin and Sir Percy, the man who haunts "his daydreams and his sleepless nights."
Not a lot of hindsight is even required here, since almost the first thing the original novel says about him (even before the first "fox-like") is that he's "nearer forty than thirty."
In The Life and Exploits of the Scarlet Pimpernel, written by Baroness Orcy's son, Sir Andrew recalls the day Blakeney explained his reasoning behind adopting the scarlet pimpernel motif and his m.o. of leaving his calling card whenever he made a rescue: