I agree and would add looking at spending without considering income is misleading at best. Inflation affects both.
I admit to getting a bit pedantic here, but at issue is the definition of the term "inflation."
Inflation is a metric. A measurement. There are lots of factors which influence it. Availability of raw materials, labor costs, transportation costs, manufacturing overhead, and, of course, supply and demand. Certainly wages are one of the inputs to that equation. But that's wages which the manufacturers, transporters and retailers have to
pay. Not how much I
earn.
Of course there's a good chance that what I earn goes up comparably with all those other workers along the supply chain, so there may well be some correlation. But not
causation. The prices don't go up because I'm earning more, any more than the go down if I start earning less.
There is also some correlation with the supply and demand equation. If
everyone's wages go up, demand may go up, which can lead to higher prices. And vice-versa. But again, the price of apples doesn't change just because I lose my job, or go up just because I have an extra $20 in my wallet that day.
In summary, whether
you have more or less money to spend this year has no impact on what the rest of us pay for products and services. Only in aggregate will higher wages impact inflation.