EU citizens always had an option to come and work so work visas only apply for non-EU. Also, the debate in Germany is mostly about asylum seekers and not skilled migration. I haven't heard the thesis "less people, more pay" but instead "more workers, more taxes". https://www.reddit.com/r/AskAGerman/comments/178iy0w/questio...
As per by neighbor: "Not the semiconductor industry. We are looking for qualified engineers everywhere. I don't see this having any impact on salaries."
If I was a local I would want to stop immigration until supply + demand equilibriated around USA levels.