"Not a single EU member has a replacement-level fertility rate, i.e., the 2.1 children per woman needed to maintain a stable population."
And your point is?
Who says that the exising European population level is desirable?
Why shouldn't populations regulate their own future?
The argument is about foreign immigrant populations intruding and breeding their way to ascendancy.
"Who says that the exising European population level is desirable?"
See social systems, see tax structure, see economic viability.