It's not the same combination used multiple times it's a similar combination from different states. Can you describe what the actual issue is here if you're not a Flock camera? How often have you personally confused plates from two different vehicles?
In this case it was Flock cameras not reading the entire plate and omitting two numbers from it. If you're really that concerned about plates getting mixed up, you should also be demanding that no two plates share similar numbers even when omitting some of the numbers from the sequence.