If I was behind some idiot retrieving carry-on then I'd be inclined to shove them back into their seat so those who'd rather get off can get past. If you want to take your baggage then wait until last.
The seat pitch one is definitely a valid point though, it's not nearly as easy to get out from a window seat with the narrow pitch spacing. Not so applicable to the US, but last time I was on Ryanair, their safety information was printed on the back of the seat in front rather than on a card, and my vision is such that it was way too close for me to be able to read.