The point of Ms Williams's article is to pour scorn on to those seeking to celebrate the UK's part in the victory over Nazi Germany in 1945 and to suggest that many people are making just the same sort of sacrifices today as that generation did then. But she suggests that nobody is shouting from the rooftops about them because many of today's heroes are not white British.
She's wrong on two counts: (1) Today's heroes, as noble as their actions are, are not making anything like the same sacrifices or in the same quantities as in WW2 and (2) People are shouting from the rooftops (well at least from their front doors and windows on Thursday evenings) about them anyway.
She's also wrong on another point:
//Last year it was announced that the traditional first bank holiday of May 2020 – the starting gun of Day Off season – would be moved from the Monday to the Friday...//
Yesterday was not the starting gun of the "Day Off" season. There have already been two Bank Holidays (January 1st and 13th April) and one Public Holiday (10th April) in 2020.