Yep, I have flown MIA-SEA many times through covid, the longest lower-48 domestic US flight, and the lack of service in the back is pathetic. I always fill up in the airport before boarding, and hope to sleep through as much of the flight as I can. American is the last large US airline holding out of resuming full service in the back of plane "because covid" even though Delta, United, Jetblue, Alaska, etc have been able to do it.
I recently booked FLL-SEA on Alaska instead, and have the choice of 4, yes FOUR, meal pre-order options in economy for buy-on-board. Plus I got a free premium class seat with my AA status so I'll get complementary adult beverages as well.