Yeah, I've been held to the sprint-ransom where my project manager would assign me tasks based off of pre-determined story pointing. If I didn't finish my work in 2 weeks, I was labeled as a slow worker.
I left that team and joined a team that used Kanban. Felt much less like I was on fire and enjoyed the work I did.
Later I joined a startup. Basically, we're doing Kanban-scrum, but with grind hours 6 days a week and 10 hour days (not to mention my 1.5 hr round-trip commute).
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.