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.
Vindicated by History: Art critics during his career dismissed his work as "banal" and considered him a mere "illustrator" (which Rockwell didn't mind, or even disagree with). It wasn't until the 1970s during his late career when critics re-appraised his artwork and realized the emotional impact his works had.