Yes, they could be grateful they are alive and many of them, in good health - unlike the thousands, who have died from this virus. Interrupted education is a blip, which can be made up in the rest of their lives! Look at the young people, who grew up in WW2 - especially those in concentration camps!
I met someone in China, who had no education for 10 years during the Cultural Revolution, because teachers were sent into the countryside to work. He was our tour guide - which is considered a good job in China! (They obviously have to speak good English and be able to get along with a wide variety of foreigners)
Are you kidding me? The interruption of eduction during the Cultural Revolution and WWII had profound effects on the children and teenagers concerned, esp the Cultural Revolution. My father did a lot of business in China over the 80s and 90s, and he worked mostly with much older engineers (his line of work) and a few very young ones because there was this "lost generation" with no engineering training. Same in other fields. Please do not trivialize this horrific disaster in Chinese history based on a sample size of one tour guide.
The impact of the CR on education was so massive that it is STILL being played out today, rippling down through the generations. Children whose own parents were the most affected by the educational disruption, have worse educational outcomes than children whose parents' education was less impacted by the CR, because the loss of skills has even affected parents' ability to help their own kids with their schoolwork!
By that token, older people who are alive in the UK ought to be grateful because they weren't murdered during the Cultural Revolution or the Holocaust.
Or perhaps we decide to be a bit more sensible and just leave stuff like that out entirely?
Well, exactly. If we are going to play the "But older generations tolerated much worse disasters than this, why can't the young people show a bit of resilience?" game, then is it OK for me to point that in previous generations, nobody expected a disease-free old age and to live into their 80s and 90s?
(And FWIW, I think it's quite right that we have higher standards for life expectency and freedom from infectious disease nowadays, but a bit of understanding goes both ways).