Yes, nobody else could write tickets that reliably takes less than a day other than the team. The problem is that your day to day structure gets decided by a brainstorming session held every other week, that might make sense in some contexts but mandating that every developer has to work that way is exactly what I mean that you aren't allowed to have any responsibility.

To me it seems like Scrum was designed to make developers have as little individual ownership/responsibility as possible while still being able to produce relevant code. I see the merit in that, you don't have to tell me why minimizing individual ownership/responsibility could be a good thing. But I strongly believe that individual ownership is necessary to properly capitalize on the creativity of individual talent, otherwise its mostly wasted.