As the life expectancy was much lower 100 years ago then of course it would kill young people in large numbers, however, many of those wouldn't have died if they had the information that we have today, masks, social distancing, hand washing, vaccines and the doctors nurses and equipment that are tools to prevent 50 million or more deaths this time around.
The difference isn't the age of the victims, it's the information, sccience and medical technology that we are fortunate to have these days. When you consider how our parents ensured we had the Polio vaccine in the 1950s and 60s, or the BCG in the 70s onwards because they had seen the devastating impacts of Polio and TB and today people refuse to have the vaccine for Covid and the reasons they give, you have to question if we put political views and the word 'freedom' ahead of the greater good.
As for refusing to wear a mask. Wearing a mask is better than wearing a shroud.