It's mostly about big-corp life, though—my time with startups and little agencies and such didn't much resemble this, day to day, but still had some of that "why the fuck are people paying me to do this?" factor, like having finished projects cancelled without ever being released due to corporate politics or because it turns out a client was only paying us build a product as a BATNA for some acquisition negotiation and they weren't really planning on using it except as a bargaining chip, or having clients (or your own startup leaders...) assign you projects that you're 100% certain are a bad idea that's never going anywhere (and sure enough, you get it done, and it flops, for exactly the reasons you could have told them it would on day 1).
Like, 80+% of the work I've ever been paid to do has been kinda pointless except to drive the gears on some abstract large-scale money-making machine that randomly sometimes produces returns but mostly just makes everyone do a bunch of work that at least someone involved already knows isn't valuable, at least not for any straightforward reasons, but everyone has to do anyway to keep the gears turning.
Feeling lost in a large org, the awkwardness of being new at a large office and of kinda clinging to the very-few people whose names you can remember, being told you're doing well and being paid great while kinda feeling like you're just coasting along and money's showing up in your account for no good reason and because that's just how your stumbling-through-life path has worked out, for whatever reason, but why should that continue for another day and OMG what will I do if people figure out they could just not do a bunch of this stuff and nothing bad would happen and they'd save money and I'd be out of a job and what else do I even know how to do and is this current too-easy gig making me soft and messing me up for future employment (but they're all kinda like that...)—very relatable.