There are some things US airlines do around safety that aren't the same as the UK, specifically around use of underseat space in exit rows (permitted) and window blinds being allowed to be closed in all phases of flight. If the cabin was basically secure for take off and landing, that's about where safety begins and ends. AA service is generally a bit dodgy too, particularly on domestic flights. Some things they do well (e.g. warming up cookies), other things aren't great.

I always think it's worth waiting 48 hours before considering a complaint anyway. I find the indignation follows a sort of inverse square rule after leaving the airport.