NJ, I fully appreciate that you don't want to hear/read anything that suggests the UK could be compared to success or that the UK could learn from the likes of Iceland. The numbers analogy for "easy-peasy" doesn't stand up, but if it did you would (logically) be arguing very strongly for the merits of Scotland becoming independent, Wales and Northern Ireland too, so they can do better than the UK. Not only that, England should be divided into much smaller independent units so that their management was improved very substantially. It is not automatically easier for far fewer people to muster the resources, infrastructure, knowledge and experience to run a country, each of the fewer people needs to be more involved, pull greater weight and all need to be more united and dedicated or it's not going to happen.
I am unsurprised that you know next to nothing about Icelandic conditions and I don't expect you to. Still on the numbers line, before Covid Iceland was heading for three million visitors annually, around 8 times its population - for the UK that would equate to 500 million visitors annually. Things are picking up in Iceland but past numbers are not at all in sight yet. What matters is the loading and the UK has never come anywhere near having to cope with what Iceland has managed - watching things unfold in the past 18 months or so, I am in no doubt which country deserves more admiration for what they have achieved on Covid alone. Disturbingly, the UK has been upstaged by Iceland on quite a regular basis and none of the UK's actions against Iceland have done the UK credit. The UK belatedly adopted a somewhat similar border approach to Iceland's (but not as generous toward visitors/arrivals) - had that happened a year earlier then one can assume that the story would have unfolded quite differently, but that is uncertain because things are ultimately done the British way in the UK.
I apologise for an obvious arithmetic error in my earlier post: not 6.6million but 660,000 per day but current UK arrivals are also below the lower figure.