Lemmings?

The UK government says its Covid-19 strategy is 'science led'. This claim is at variance, however, with their own Scientific Advisory Group for Emergencies (SAGE). SAGE describes the government's traffic light system for foreign holidays as 'window dressing' (https://www.theguardian.com/travel/2021/may/09/traffic-light-travel-plan-will-let-new-covid-variants-into-uk-scientists-warn). Members of SAGE (and most other scientists) believe that the traffic light system means it's 'inevitable that new variants (of Covid-19) will enter the country'. The whole point of the scheme is preventing this. Infection and vaccination rates of the host country (used to place countries in green, amber and red categories) are fairly meaningless. An effective scheme would need to know the rates among the people their holidaymakers will be mixing with. Portugal is in the UK's green category (travel to that country will not require quarantine on return). The EU (Portugal is a member) is, however, opening up travel between all its member states. So, any British tourists going to Portugal, will certainly mingle with Dutch, French, German, Italian and Spanish holidaymakers. There will also, inevitably, be additional mingling in airport terminals and on planes. None of this seems to concern the lemming-like British holiday maker. UK travel firms have reported that Friday 7th May was their best day of sales for months. Tui recorded that 60% of all holidays sold on that day, were packages to Portugal. Australia and New Zealand are also on the UK's green list, but neither will currently let holidaymakers from the UK in. That sounds a bit more like functional quarantine?