This is indeed where the article goes, but I suggest risk is overstated as a factor here. Everyone knows they should be tested, so an incentive to actually go

This is indeed where the article goes, but I suggest risk is overstated as a factor here. Everyone knows they should be tested, so an incentive to actually go and do it doesn't need to be large or meaningful. This also acts as a genuine acknowledgement by the state that this is important and that it's without taboo. Testing reduces everyone's chance of being infected - so it ought to reduce risk-takers' chances proportionately more, lottery or not.