The article you link is from April 2021, before the inflation burst and the subsequent recovery. You're not seriously saying that people are voting against economic conditions that prevailed three months into the Biden presidency?
Again, this idea is just wrong! And I hear it from people on, as you point out, both the left and the right. And it's wrong, as a simple matter of data! Something terrible happened with messaging this cycle.
The discovery of not being able to afford groceries is organic and real. The attribution of it to Biden is organic but mistaken. Regular people confuse correlation with causation.
You are projecting your data-driven decision making to regular people who don't do that. Depending on how neurodivergent you are, you will eventually learn that you can't model how typical people think based on how you think. People aren't looking at hard numbers. People try to find patterns in what they experience.
Again, this idea is just wrong! And I hear it from people on, as you point out, both the left and the right. And it's wrong, as a simple matter of data! Something terrible happened with messaging this cycle.