I did say "Community level".
What goes on in the upper atmosphere has zero relevance.
At that level players are aware enough and skilled enough to react to the collapse and stop shoving.
At Bogcaster Extra B level they just shove on, head down, brain off and legs pumping.
If YOU (by which I mean all known posters with possible exception of NP guys) don't whistle then you are in a potentially dangerous place should there be an injury.
You would be in exactly the same position as you would be if you had not gone to uncontested scrums when no STE FR available. - ie in court without a paddle