first, if you see someone with more rods or fish then allowed, report them.....the MNR can decide if they are breaking the law...or post here with picture and maybe we can embarrass them into being lawful..
as as for more rods everywhere...there is a mortality rate for released fish...
some say 20% some say 50%
but the point is, you can be killing way over your limit by releasing them and if you have extra rods better fishermen, could do major damage and still be under their limit..
now if you want multiple rods and have the catch and release limit the same as the catch and keep limit...then it works
which would mean..if the limit is one, then as soon as you hook one fish you are done fishing..........those 5 extra rods could have your fishing day done in five minutes...but it would be fair