3 hospitalised in 9 games as a direct result of falling on summer concrete (not great season stats)It's what's under the water that's the issue. If the ground churns to mud under the water - and it may well do so with 22 players crossing over it, then getting your foot stuck in the suction there is asking for a bone break if it happens during a challenge etc.
Hard pitches should be played in the appropriate summer firm ground studs really, but if they're good pitches they shouldn't have any risk of injury outside of awkward landings. Sadly, at grassroots every pitch seems to have a hidden flipping divot somewhere.
I'm not buying this fearsome ankle breaking mud malarkey; not one iota
There is a thing in horse racing, termed 'false ground'. It can mean that the soft top surface sheers away from a hard pan beneath. However, we're neigh refereeing horses