You can get more of the agency you describe as an independent contractor working on smaller projects, or in early stage startups. There's nobody breathing over your shoulder, just a "give me an estimate, let me know when you think you can get it done" sorta deal. I do enjoy that work better, but it's not as consistent.

The scrum-driven, jira-driven "small chunk" style of development is kinda depressing to me. It wasn't always like this, and there's so many new folks in tech many don't remember it used to be different.