creedy mono can cut mono, obviously if one is a stronger breaking strain than the other. Had it done to me a couple of times on there and the Addy.dan (Mudway) is a real genuine bloke and a very good angler and i no for fact he no's how to fish the breakwater, if u dont like the fact that u will get caught up sometimes then dont fish venues like the breakwater and the addy it happens no matter how good a fisherman u may think u are it onlys takes one person not to uptide to cause problems, also i have to agree that i never heard of mono cutting line maybe braid but im pretty sure dan would not have been using braid.
Have met both mudway and nick and I'm sure they are both capable anglers and this was most probably an unlucky day for nick and his dad.
I have had numerous incidents regarding anglers who are novices or even seasoned experts that have crossed my line with a cast or the weight being dragged into my line because of tidal run on the Wall or Addy and myself getting rather peeved off because of it. Its a case of either having a quiet polite word or if it continues throw em in. Only joking Try to help them, if they are willing to learn, or move.
Thats why I don't fish the Addy much now.