I really doubt it will establish itself as something broadly adopted. Perhaps the EU tries to force the issue, but that will undermine this "solution" as well and there are ways to evade that.

There were good ideas at first but especially data protection features have already been scrapped. Also you need to buy into the Apple or Google ecosystem, no alternatives allowed. Especially funny if the next sentence contains some reference about independence...

I will not use it for anything privately as I neither trust the issuer, nor the notified bodies providing the infrastructure.

Our police accessed app data from Corona movement apps, it will do the same for any and all digital solutions the bureaucracy tries to sell. This is political problem we had for decades. Authorities aren't trustworthy, the legislative refuses to introduce strong privacy protection and instead tries to do the opposite. They even further enabled large platforms to scrap user data even more unhinged. To hell with them and with their shitty projects, I don't need a shitty content gatekeeper, even if you pay me.