Do you have a source for that? Because that would definitely be the crux of the issue then.
The article itself quotes:
> "In its ruling, the CJEU expressly recognised that a subscription model, like the one we are announcing, is a valid form of consent for an ads funded service."
which suggests that it is not illegal. But of course this depends on whether the "ads funded service" includes tracking.
I can't find any clear answers from a few quick google searches. Of course, the existence of this lawsuit suggests that the law itself may not yet be sufficiently clear, and so the judicial ruling will ultimately provide that clarity.