A few years of practical use for something that was designed a lifespan of several decades fits within the definition of "about to expire".
If your purpose is to mislead rather than inform, sure. But why would you do that?
Transmitter is slowly losing power and it is a question if DSN still can receive from it before it completely shuts down.
Let's ballpark this: The RTG (plus degrading TCs) is ~50% of what it was after ~50 years.
This is therefore not the problem.
Why, you might ask?
Allow me to explain: Take a calculator, and then divide one by something that is squared.
Even a smaller number, such as two, gets into why this is problem (and it is known as the inverse-square law)
1/(2^2) = .25
As you can see, we're already at 25%!
As to reception/transmission: We don't run in practical problems that intercede into the theoretical for decades unto hundreds of years, rather, it starts to be a bit a second, a bit a minute, a bit an hour, etc.... (as it was originally hundreds of thousands, now ~hundred a second...)
EDIT: Rethought snark and removed it (mostly!)