Okay... Pop Tarts are also Kellogg's, not a tobacco company. But let me pick some other examples.
Eggo waffles predate RJ Reynolds getting into this by 10 years.
Twinkies were introduced in the 1930s.
I'm not defending ultra-processed foods nor tobacco companies. I'm just saying the authors have a major blind spot if they think the concept or popularity of ultra-processed foods started in the 1960s.
This is a bit of a strawman. The authors, if you read the article carefully, are not saying either of what you're attributing to them.
The Twinkie of 1940 is very different from the Twinkie of 2000. Lots of old and sort of OK things got corrupted when pulled into the corporate-Zerg-slime