I won't say that future will never happen only because "never" is a long time, but that's not happening in the foreseeable future.
I'm in Germany right now, and theoretically my ID card can be used online.
In practice, "Digitalisierung" is kinda a joke here, much like "paperless office".
For example, I have to visit an office to activate that feature of my ID card, and another to tell them I've moved.
During the pandemic, they briefly realised they didn't need to do that, then they forgot.
Likewise with health, there's more than one health insurance provider just in Germany, let alone the whole EU, and if I move country (not just travel, move) my previous insurance isn't likely to work in the new place anyway — it would take substantial improvements before it would even be possible for someone to corrut it the way you're afraid of.