US: Questions and Observations *Spoilers*

Last weekend I went and saw Us. I have questions. I also have observations. There will be spoilers. I also want to note that I saw Us at the drive in. Sometimes darker (as in colors, not genre) movies I run into some difficulties seeing, so some of my questions may be because I couldn't see properly, feel free to enlighten me on anything.

• Observation: Winston Duke's character was a punk. He was absolutely useless, and his drive to keep up with the Jones' drove me nuts
• Question: Did you notice you never got a good look at Adelaide's parent's faces? What was the symbolism in that?
• Question: When they won the T-shirt for young Adelaide, the mother noted that the Thriller movie scared the mess out of her. You scared of Thriller, but you walking into an abandoned fun house? Oh you dumb dumb?
• Question: When they were pulling up to the beach that Adelaide didn't want to go to, they saw the Jeremiah 11:11 guy dead. On that beach, you saw his tether dripping blood, just standing there. Did they kill each other?
• Question: Also on that beach, did anyone else get the feeling that the twin girls were racist assholes? They knocked over the little boy's sandcastle, and demanded to know why Zora wasn't swimming. Maybe racist isn't the right word. Maybe just insensitive pricks.
• Observation: Something struck me as off with the little boy. I am not sure what though.
• Observation: When the tethered met Adelaide's family you notice the father's face was dark as well? You could barely see it. He was worthless too. Skulking around like Frankenstein's monter.
• Question: Pluto (The little boy's tether), what happened to his face? Why was he all burnt up? I know he liked fire, but we never got a reasoning for it.
• Question: You saw at the end the little boy controlling his tether. Why didn't anyone do this from the beginning? WHY DID WE NOT START A FIRE AND BURN OUR TETHERS!?
• Question: Maybe it was too dark for me, but what was the significance of the dance recital? I know Adelaide stopped dancing after that, but the tether mentioned how she knew Adelaide felt it during the dance. Felt what? What did she do?
• Observation: Winston Duke's character and his boat are the worst. THE. WORST.

If you guys could help me with these questions, I would be much obliged. Also, I would love to hear your theories!