Apple is unusually centralized (they don’t even have different business units; the company has a single balance sheet at P&L) and corporate level decision making is pretty much all done by the same small team at the mother ship.
So while all sorts of decisions are made locally, a hire outside Cupertino (which all of Poland happens to be) is extremely unlikely to signal a corporate shift.
Even a job ad for a role in Los Angeles would be equally unlikely to signal such a shift.
Out of all the places in Poland, this choice is pretty strange. :)
It’s not some “paper HQ” for tax purposes, either - they have over 6000 employees there and are easily the largest private employer in Cork.
Just like Amazon posting for this position in Phoenix wouldn't be seen the same way as Seattle.