I am not sure about this, but has anyone else noticed that AA seems to have more baggage sizers around at US airports this month than it had at the start of the year?

Noticed more AA baggage sizers but not more enforcement yet.

Well, they should in theory care just as much, though merely not force-checking bags for the last groups doesn't mean they're not at a minimum eyeballing the size. (Of course I recognize it sounds like they probably were NOT enforcing size limits).
The widebodies typically can accommodate all passenger carry-ons; the F and J cabins are not very dense (you basically get your own bin), and in coach people are more likely to check a bag if they're traveling overseas for an "extended" time period. Also, I think the first checked bag is free on long-hauls, except maybe for basic economy.

I hear ya and absolutely agree. I’ve been on both sides of the equation more than a few times.

I’ve noticed at the hubs but not at the spokes.

Snack basket until breakfast which is only cereal and fruit, zero options.

So technically yes.

LIH-LAX-ELP-DFW no visible extra bag checking.

That's definitely an interesting way to get from LIH to DFW! Priceline special?

Or google flights.

I did CLT-EYW-MIA-BOG earlier this year, thanks to google flights (CLT-MIA was sold out). Caused a serious commotion as ground staff / security couldn't figure out what to do with me as they thought I was making things up regarding connecting.

Boarded a bit ago at IAH. No sizer use, except one person got stopped with 5 (five... F-I-V-E) pieces of luggage. 2 were checked complimentary, she boarded with 3.

Amazing job AA. Really making things happen here.

I've got 26 domestic flights coming up in November - haven't flown AA in a while, so this will be interesting. I've been using the larger Rimowa Topas (22.1 x 17.8 x 9.9") for the past two years; never had any issues with it.

I'll report back after my first few flights... I really don't want to have to buy a new case as the one I'm using looks pretty sweet with the patina and whatnot.

F-I-V-E, wow! How did she carry them? Like three rollers and two bags or two rollers and three bags? Sounds like she was World Class in the baggage game.

At South Florida airports when I’m headed back to the NYC area, I’ve seen people come with giant shopping bags on top of the regular assortment of two or three cabin baggage items. One group of women who were clearly overloaded with cabin baggage and stopped for it — and this was close to seven years ago — asked some of us, after they had scanned their boarding passes, if we would bring on board an item for them during the boarding process. I refused, but it seemed to me like the airline wasn’t stopping then from asking others to do so that time.

I accustomed to seeing these displays at check in but not the gate. And I’ve been asked more than once by another passenger to check their bag. When I remind them that’s against security regulations they act offended like I’m an @$$. I know we all complain about AAgents but I can’t imagine the crap they go through with the traveling public on a daily basis.

Two rollers, 2 carry bags (like beach bag style) and one purse.

I tend to suspect that the change from today/Thursday of this week to Friday of this week (the 1st) will be quite noticeable in some places.