I'm a pretty useless developer who does about the same amount of real work as you per week. I also often don't understand the technical details other developers discuss in meetings.

I am generally quite open about my lack of aptitude, as I result I've never really been promoted, I've just bounced around between different junior roles. It always seems obvious that I'm the most junior member of any team I'm on, but I'm starting to wonder if that's all in my head.

Your post kinda makes me wish I'd tried a bit harder at bullshitting. Maybe I could've at least made a bit more money.