I'm not surprised.
I'm from Canada. My girlfriend and I were in Hawai this winter. We went to Cheesecake Factory. Dear god.
We split a lunch sized portion of Louisiana Chicken Pasta. That was more than enough for the 2 of us. It was 1400 calories. The dinner sized portion is 2050 calories!
Someone could go to Cheesecake Factory and order the following for dinner:
Pasta Carbonara with Chicken - 2290 calories
Coke - 160 calories
Piece of Chocolate Truffle Cake - 1680 calories
That's 4130 calories in a single meal. And without even factoring in the free bread/butter or any appetizers. I mean, a single piece of that cake is more calories than most people should eat in a single day.
America has a problem with food portions, no doubt.
I first went to the US back in 2000, when I was 12. Big family roadtrip. I was a big kid back then - not obese, but definitely on the heavier side. I remember all of us being absolutely shocked at the portions whenever we ordered food. We actually have pictures of us posing with the portions, with our hands besides the plates, heh.
We did a lot of hiking and stuff like that (beautiful nature, definitely jealous of that), and I just couldn't handle it. Already being out of shape and having just way too much food was a shock to my system when actually having to spend entire days walking. I pretty much switched to mainly salads because I woke up every day feeling like death. Which actually resulted in me leaving the US thinner than when I came in! I got my growth spurt not too long after that so I was fine from then on, but man, there was definitely a major difference in eating habits between the US and Europe.
Of course, this was 17 years ago, and we had to go out to eat almost every single day.
Part of the problem is not as many families cook dinner anymore. In most cases, both parents work. They find it easier to drive by a restaurant for take-out versus heading home to cook something up.
And, IMO, this trend can be traced back to the lifestyle choices (McMansions, nice cars, etc) and cost of living driving dual income families.
I've heard this a lot (including in this thread), but working long hours really isn't exclusive to the US. Me and my girlfriend both work full-time. Almost all my friends that are in relationships have both partners working - some of them have young children that demand a lot of time. The idea that one partner stays behind to take care of the household is a bit old-fashioned here as well. I don't think most of my friends could really afford to get by on just one salary. It really doesn't take that much time to cook healthy, and you can easily cook in advance if you need to.
You can cook a healthy meal for multiple people in less than 15 minutes. Everyone has 15 minutes left in their day. And if they don't, it's easy enough to cook ahead a couple of days.