What's risky about it? If you're young and healthy, your chances of dying from this are like 1/10,000. Only a tiny fraction of that demographic will require hospitalization.
And I'm absolutely floored that Sweden and the UK of all places are apparently taking a sensible, pragmatic approach to this.
Staying in lockdown mode for 2 years until a possible vaccine is developed, produced, and deployed, really isn't feasible. Places like Korea and Taiwan which have reduced the reproduction rate to below replacement levels with face masks, good hygiene and border checks might be able to pull this off, but it's too late for America and Europe where the virus is widespread.