Right, but point is, you can quite easily have Mobile-ID and your ID card, and if something happens to your ID card you can still use Mobile-ID. I think.
If there's no redundancy measure for the ID card system failing - for example, automatically extending deadlines - that's a problem, and an easily solvable one at that, since it's mostly policy. It's not something against the ID card system.
Yes, but you need to already have Mobile-ID for that. To get a Mobile-ID you need ID-Card with valid certs.
So if a person doesn't already have Mobile-ID and their ID-Card certs are blocked they can't get a Mobile-ID and thus they can't access any digital government services.
It's not like this is purely theoretical - large number of Estonian Id-Card will have their certs blocked and not everyone has Mobile-ID.