This is another site I occasionally visit. After my ANC trip in Mar 2021, I reviewed the most current (F) photos on AS and AA domestic (my preferred carriers). Then I reviewed international carriers. Appears to me that even the damn Russian carriers do better in domestic whatever class than US carriers do period.
Opinion: US Flagged carriers better step up their game. I believe it's all about the $$$ at this point and not about "social distancing".
Afterall, you're stuck in a metal (more or less) tube for hours next to anyone else.
Furthermore - but probably for a different thread - domestic F seat pitch has gone to hell in a handbasket (whatever that phrase means). Seats aren't any wider, but pitch on any given 737 still sucks in F. Worst example of that downsizing debacle I can attest to first hand is the AS acquisition of VX and the refit in all of the Airbii that came along for the ride.
MRSANC and I flew LAX-ORD three years ago or so, just after the merger on a VX 320. Domestic F seat pitch was 56". AS dumbed that down to 41" (source: SeatGuru, AS, A320, Versions 1, 2, and 3), which is only marginally better (3") than AS's Y+ seating. (Photos in two of my trip reports here re: VX vs AS Domestic F before the dumbing down - Long report here: viewtopic.php?f=40&t=23995
. Down and dirty version here: viewtopic.php?f=13&t=23981
AA followed that course when they bought the 738Max. And has since refit the F cabins on most all of their other 738s. Source: Seat Guru, AA, A320 36" in F; 73M, 37" in F).
Again, opinion: It's all about the $$$.
Armor. M60A1, M60A3, M1, M1A1, Master Gunner, CSM - Best Job I Ever Had