For my two cents,

I think Kavinsky was a little disrespectful to Gargantua.

"Your maps suck ..." is not the greatest opening line, and not the greatest way to get the attention of the reader/map creator.

Secondly, as Gargantua said, they are made for Classic ZM servers. So the onus lies on ZERO to remove them (as IBIS ZM is a multi-class ZM server).

If anything Kavinsky, you should have approached him respectfully and asked him to possibly consider editing the maps for functioning on multi-class ZM servers. On the other hand, ZERO can adjust the speed limit for zombies on maps, which is what really should be done.