Idle thought on submunitions...

[Marcello]

This sort of UXO is surely a problem for civilian life. Whether is a problem for a military unit is more debatable and the article gives really little in the way of hard info about that. Things like the probability of setting one off by stepping upon/near compared to mines etc.
In addition minefields in SP assume antitank mines being present. Those submunitions are probably not that effective against tanks tracks unless maybe they were pointing at the right way.
From what I remember from GW1 walking in an area where MRLS had been used was considered to be distinctly unhealthy but not especially dangerous for armored vehicles.