I updated the post. The normal login flow requires swedish digital ID. Reviewers won't have access to that.
On the flip side I've heard my fair share of horror stories from expats that get locked out of necessary services only because they don't have a social security number and bank account (yet). And that process can take a while.
On the other hand it means that it's impossible to determine which user is logging in until the proper auth is complete. And thus you cannot have "special accounts" using this flow.