You got yourself linked.
To answer your question no there is no special scan going around. This is standard bot work for paypal - they noticed a pattern or connection between your accounts linked them all and limited them as a result.
How many accounts did you lose? anything specific theyre asking for to get them unlimited?
__________________
AGED SUPER HIGH LIMIT ACCOUNTS: 10,000/$1,000,000 and 25,000/$500,000
It might be possible that you have linked all of your accounts somehow.
I am not 100% sure, but I do believe that they might be reviewing accounts more carefully during this time of the year.
I read on reddit that a lot of people have been suspended or limited recently, there are always 2 or 3 threads daily ,where people complain of limitations.
Welcome to the forums OP - rough news to hear but can you share steps of account creation? Same photos or same listing auctions used across eb accounts? Transferring money back and forth between the paypals?