The context of the above was Netherlands, where there is no widespread quick testing-on-entry as there is in Germany. There is largely no restriction in day-to-day life in the Netherlands (and even less in the coming weeks), with or without a vaccine QR code; the code would apply for access to large events or travel. Also in Netherlands the government is paying for travel PCR tests through July and August. These countries have taken quite different approaches.

You do raise an excellent point that this vaccine system excludes children.