Nail on head. It's "direction of travel" across the continents. As you rightly say, we would laugh at the US a few decades ago, and now we''re the same in the UK. And yes, a few decades ago, mainland Europe was very different to the US and UK, but now you can clearly see the deterioration in France, Spain, Portugal, Italy, etc., as they are likewise drifting towards processed and ultra processed foods, not just in shops, but restaurants etc - menus are changing! It's all coming downward from the handful of enormous global food processing firms that dominate the Western World.
So sad to see. We're old enough to see the change. Back in the 80s, we were going on foreign holidays to USA, Canada, throughout Europe, etc., and European food in shops/restaurants was head of shoulders better than the UK which likewise was head and shoulders better than America. Now that wave has swept over the Atlantic to the UK and now crossed the Channel to Mainland Europe.
You can also see the very obvious and clear effects on the populations, i.e. most people overweight, large proportion obese and morbidly obese, with all the resultant mobility and health problems than affect employments/benefits healthcare costs, etc.
I hope the Europeans are taking notice of what has happened in the UK and US as they're heading in the same direction and will also start to see collapsing healthcare systems etc.