Now that our line has been officially designated the "slow-line", it's not as if any express trains are going come rushing past the platform!
I've travelled from either FH, HOP or Brockley pretty much every morning since the mid-80's and never seen a problem - it's just the usual nanny-state mentality....there's no need for it.
Most of us are in a bad enough mood early in the morning (just because it's early in the morning), without being antagonsied by a little Hitler...especially when the trains we want to catch are either packed or late or both...
Someone will have a "falling down" moment with with one of those guys before long...