I like collecting stats
This is the age of accounts before your first mutual game + game results from April-May 2025:

1046 accounts total, 67 <1 month old accounts → 6.4%
This is the age of accounts before your first mutual game + game results from April-May 2026:

646 accounts total, 140 <1 month old accounts → 21.7%
So there is amount of <1 month old accounts and it grew up over the year but it is still not the most

I've noticed that lately most of the people I play have accounts less than 30 days old. Most of them are sandbagging, and constantly setting up new accounts. Much of this could be stopped if chess.com allowed members to filter players by the age of their account. Unfortunately, I assume chess.com actually likes the fake accounts, because like the Twitter strategy, they believe all of these fake accounts adds to their company value.