See, the whole debate is one of generational differences regarding context and literalism.
Grandpa Joe was never faking it. It was never anything other than him being old and worn down beyond the ability to do more than stand up for bedding and clothing changes.
The news of Charlie getting the Golden ticket was transformational. Joy is transformational.
And that's the key to understanding most of the movie.
Notice that all of the kids that get transformed, get transformed externally. Much in the way grandpa joe was.
But Charlie never changes on the outside because his inside, his true self, is filled with the joy of the world he enters via the Golden ticket.
Grandpa Joe is transformed by the power of Charlie's joy. Remember, out sad grandpa joe that pushed Charlie into stealing fizzy lifting drinks. And, at the end, it was grandpa joe that would have given the gobstopper to slugworth.
But, again, Charlie saves grandpa joe from his own bitterness and anger (despite that anger being justified) by expressing his inner self in a true and honest manner. Charlie is hope, hope that joy and goodness can exist no matter how dark the world is. Grandpa Joe is a man that lost hope and joy as the world pummeled him with body wrecking labor, poverty, and hunger.
But, inside grandpa joe is a different form of transformative power. Love. He loves Charlie so much that Charlie's joy can change him. Remember, one of the best definitions of love is another person's happiness being intrinsic to your own.
Nobody who loves their grandson enough to overcome age and pain to then walk around a giant factory and still manage to rage against a man (wonka) who had dared crush his grandson's hopes and joy can be truly bad.
That's why grandpa Joe is our window into joy. We're all cynical adults now, having journeyed on the same path as Joe, being worn down until all we can see is the surface of the event, rather than the true nature of the scene and the character.
But, when we were kids, it was different. We can remember Charlie being our door into that world of candy and song and happiness. It's only after we begin transforming into grandpa joe ourselves that we forget that the entire movie is about joy and love making the entire world a better place.
I don't think its as big a thing since so many people quit smoking in last two decades, but growing up I used to see people (usually active heroin users, but not exclusively) picking up cigarette butts and rolling up the bit of tobacco left at the end. Also in 1971 cigarettes averaged 30 cents in USA, so I don't think being able to afford cigarettes was the same 50 years ago as today.
I live with this man, he is my father.. My father, when he was 20 or so, was doing a roofing job and was walking across a roof with 2 bags of 50lb roofing tiles on his shoulders. He then slipped off the roof and landed on his feet, with the bags of tiles pushing down on him, crushing 2 of his vertebrae.
When he was about 36 or so, when he wasn't working or eating, he would lie in bed, saying how his back hurt.
He continued working until he was 50 or so, and then started collecting disability. From then on he stayed in bed an average of 23 hours a day.
he is now 67. He has atrophied his back muscles entirely, he literally cannot even stand up long enough to use the refrigerator's door to fill his cup with ice.. he leans his head against it to hold himself upright.
And I loathe him.
His first born abandoned the family about 20 years ago, and his second born has a family of her own about 4 hours away.. I never had children, so I was volunteered to look after this man...
There is a reason I never had children, I never wanted the responsibility... Luckily for me, he's had several strokes and now ACTUALLY ACTS like a toddler. It's just awful.
This meme is classism and always has been. Hating the poor for being too depressed to work for pennies in hellish conditions while in agony due to various debilitating age problems is hateful shit. It is just used as a socially acceptable method for people to do hatred for the poor while simultaneously spreading the virtue of working for fuck all.
Aging was even worse back then than it is now. Modern medicine as we know it today basically didn't exist.
The story has a lot of magical realism going on. Joe's ability to get up and go to the factory with charlie is half miracle, half Joe making an extraordinary effort.
The whole thing is just incredibly shitty towards disabled people
It's a mean spirited meme, and it also gives me the vibes of "this person isn't depressed because I saw them smile once".