Yeah, that’s gonna exacerbate existing demographic issues that are affecting Ukraine (as well as the rest of Europe). It was one of the first issues that I remember raising back when the war kicked off and a bunch of refugees left, that Ukraine’s going to have to deal with stabilizing its post-war population…and that’s something that the EU even as an aggregate hasn’t done a great job with thus far, and for Ukraine, it’s only going to be a tougher job if there’s gonna be freedom of population movement with the EU as a whole, as population tends to flow from poorer areas to wealthier ones.

https://www.populationpyramid.net/europe/2023/

That’s UN projections for Europe as a whole, not just the EU, but it’s already just past the peak and is entering a period of quite-significant projected population decline.

That’s a pretty large shortfall in babies.