Uncritical “this is great, that is awesome, things are wonderful” posts get a pass here and are not held to some high academic discourse standard, while “things are not so great, life is not that good” posts get responses like we’ve seen in this thread.
One doesn't have to subscribe to toxic positivity to see the childish absurdity of a statement like "It’s difficult to keep moving knowing that we don’t have the ability to opt out of the way our whole society works."
Pretty much nobody ever did, in any society, with few exceptions. "Going to America" was one exception, and then "going west". But for most people, for most of civilization, that has never been an option.
And, in fact, the whole system is stacked against us less than it has been for most of the history of civilization. You aren't a serf. You aren't a slave. You aren't an indentured servant, or bound to a ruler or leader in any way.
But I think what many people are feeling is the first derivative. There was a time when the system worked better for people (at least for white males) - say the 1950s or 1960s. People can feel the first derivative being negative. They feel the loss of something. I think that's behind the surge of this sentiment.