Is Iceland all that depserate for new residents / tourists? Being choosy about who you let move into your country is their prerogative. If they can attract a few high income people, that is a win.
I’d assume various covid requirements (vaccines and testing) have hurt tourism a bit.
Their airline was quite popular as a cheap route between Europe and North America, and again, lots of otherwise passengers can’t/won’t make that journey.
You can buy permanent residence in Costa Rica for $5000-ish.
And all of this is for an activity that most countries would be fine with you doing on a tourist visa. It’s pointless.