I think this is a fair point.
My eldest was doing his finals at Uni in March 2020 - everything shut down at the drop of a hat, he came home to write his final dissertation in his bedroom.
Degree certificate came through the door, and he had a scaled down "Graduation Ceremony" two years later.
He originally had a job offer set up in the US, but this was cancelled.
DC2 was Year 7 in March 2020. Went all on his lonesome from a tiny village school to a massive High School.
He absolutely thrived in lockdown academically - and is reaping the benefits to this day.
That said, socially, he has missed out on naturally gaining independence.
DS was a keen member of the Scouting movement, for eg. He was a Beaver, a Cub, and had just started at Scouts (DH was also a Scout Leader).
When lockdown lifted properly, DS was at the age of Explorers, but he didn't really properly get back into it - and has since left.
He's Y11 now, and academically thriving - I do believe that the lockdown period served him well, and that he benefitted from being able to study at home.
DD was Year 6 in March 2020. She was academically enthusiastic and highly achieving at Primary school.
Lockdown took away a lot of that enthusiasm. She missed her end of year school activity trip, and the end of term play.
She's Y10 now, and never really recovered that level of school enthusiasm - although, it's impossible to know whether this would have happened anyway?
I'll qualify this by saying - both my younger children have been lucky to have access to computers and study spaces. I am very well aware that not all children have been as fortunate.