Seems like archive.is is using DNS-based load-balancing/fail-over. My best guess is that the person/group that's running archive.is is having some operational issues right now and you caught that issue.
For the record: from GCP (using default resolvers, e.g. Google) region europe-north1-a... archive.is resolves to 46.45.185.30.
I enjoy googling a new phrase as much as the next person... but really?
From WP: Ceteris paribus or caeteris paribus is a Latin phrase meaning "other things equal". English translations of the phrase include "all other things being equal" or "other things held constant" or "all else unchanged".
In this particular case (I have personal experience and have done the research) I'd say the two countries are on par, if you are lucky enough to get the top level treatment in each country.
I guess she has a health insurance as part of her employment at Adam Savage's Tested.com.
Having a Swedish citizenship, she also has the option to travel back to Sweden, sign a form and within a day or so be eligle for free healthcare there.
Probably to re-establish the residency status. The same thing is in Canada except the med coverage restarts 3 months after you settle back on the Canadian soil.
For the record: from GCP (using default resolvers, e.g. Google) region europe-north1-a... archive.is resolves to 46.45.185.30.