That's an interesting story, and a very interesting chart. They're right: there aren't many products that have been so widely available in the same form for so very long.
But I object to the PoliticalBlogspot people's insistence on saying it's due to "Biden's inflation", which was for the most part the result of COVID supply chain problems and subsequent inflation.
However, if they want to call that "Biden's inflation", then let's take a look at Trump's inflation: a can of Campbell's Tomato soup now costs $1.69 at my supermarket. And the "heart healthy" kind is $2.29.
BUT the real winner, if you like Campbell's Tomato, is Amazon, where you can currently get it for $0.97 a can: