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.
YMMV: Johnny Tremain
Ear Worm — The Liberty Tree song in the Disney movie.
Ho Yay — There's plenty of Johnny/Rab fanfic out there.
Squick — When Johnny accidentally put his hand into molten silver, the scar tissue fused his fingers together.
The fingers still work, the problem is that they didn't get a real doctor and the herb-woman wrapped his thumb into the palm, and it healed that way, so no thumb-action. Dr. Warren says he can fix it, when he finally gets a good look at it at the very end of the book. Not good enough to go back to smithing, but good enough to hold a gun at least.
What Do You Mean, It's Not Political?: The movie was released in 1957 and it's quite easy to see some of the political rhetoric in a pro-American Cold War context, particularly when James Otis describes how it will be America's mission to bring freedom to the world and refers to the "serfs of Russia" as some of the people in need of said freedom. Walt Disney was a fervent and well-known anti-communist.