Not necessarily. I'm not being left behind. Nobody as literate and as cognitively blessed as some of us are can ever be "left behind." Nobody is leaving me -- yes, me, personally -- behind. Society might not be "progressing," first of all, to a "forward" state in order to be able to leave free thinkers behind. It might be descending, upon rationality's grounds, into a maelstrom of wanton #######ing and rally 'round the Maypole for your favorite cultural revolutionary relic that does it no good, but it is not leaving a lot of us that dissent "behind."
Cultural "advancements" are often not as such. I'd submit that not being able to pick your own partner's genitals without a derisive label would be more totalitarian in nature than a march of freedom's progress. Why do all the dystopias focus on breeding at one point? Because sex is the most intimate thing we have. We are fully realized when we are able to choose our sexual partners, our sexual potential that results in birth and life. Why in Zamyatin's "We" are you compelled to have rotating partners and forced lovemaking sessions at certain times within your life cubicle? Why in a Brave New World are you assigned a partner by genetic merit for efficiency? Or in Orwell why do you have the prevention of isolated couples intermixed with an overweening Duty To The Party for all things sex? Because the state, or society writ large, interfering with your choices at that fundamental a level reveals how tethered one is to the monstrous state and how much power society has over your decisions in that realm.
But enough about sex. Left behind how else? By economics or status? The New Communist Man was billed as progress. Five-Year Economic Plans were billed as progress. The Nazi ubermensch was billed as progress. These now sit on the dustbin of history. There are tons of things billed as progress that aren't progress at all, nor is anyone left behind, rather, they've wound up in camps and gulags at the gunpoint and behest of simple majoritarian knuggle-dragging thinking.
Generally, nobody is getting "left behind." They're determining what to accept into their life and what not to accept. And I would caution that the masses will not only not like this new state where they are "left behind," but that their hearts and minds will rebel at the thought. Then things will get uglier. Uglier than January 6th. There will be weird coalitions shaping into formation whose surface we have yet to see scratched. Not a whole lot of people are going in for the "left behind" status, if that is really the effect of what is happening because of the brashest and the loudest and those with offices or positions of sinecure. Prepare for backlash if this is the case, but it won't be because you're moving forward and leaving everybody "behind," it will be because the new program is likely intrusive, obtrusive, and nowhere near what truth did.