On a surface level, you got it right. Walt seems to think that lower productivity is somehow actually higher productivity... As ITN called it, "bad math".
But to expand upon your "back to back quarters of productivity falling" statement, I just want to be clear that what you are making reference to is a GDP number. A more precise and accurate way to state your claim is that the GDP number has been negative for two consecutive quarters . Productivity in and of itself has actually been down for quite some time longer than that (ever since the 2020 COVID shutdowns that Democrats did).
Now, how can this be? I will provide you with an example to clarify:
Q1: 100 widgets produced @ $10/widget final widget value = $1,000.00 monetary value of widgets
Q2: 80 widgets produced @ $13/widget final widget value = $1,040.00 monetary value of widgets
Under this scenario, the productivity of widgets has decreased by 20%, yet due to a 30% increase in final widget value, the GDP number still ended up increasing by 4% even though productivity has actually decreased.
This is why one needs to be careful with regard to referencing GDP numbers by themselves when trying to make sense of the condition of the economy. And yes, I know that it is claimed that the GDP number "accounts for inflation", but that claim is incorrect.