The message on the original post is part of the "early notification" sent out by the League Secretary to all the Nominated Club Contacts of D/N 2 clubs for dissemination to players and members. The message also pointed out that it is expected that boot cleaning equipment will be available pre match.
    The issue of "players having to buy new kit" is, in my view, a red herring. Clubs provide most kit and clean it, players provide boots of which any legally studded boot is fine for AGP use.  Blades damage the fibres of the AGP and again, in my view, are unsuitable for rugby on any type of pitch.       Studs help keep the fibres of the AGP fluffed up, trainers and flat soles shoes pack it down.
    Like them or not, AGP's seem to be the future.  Kids, the future of our game, seem to love them.  Let's embrace the future!
   

I don't like playing on them, much prefer a 'proper pitch'

I understand you saying that, but I was at a dinner recently at which Deano was the guest speaker and he was asked about 'Astroturf' pitches (that was the term being used on the night). He said when new players arrive at KP they always express doubt about the pitch, saying they prefer grass - but after a couple of months they fall in line with everyone else in preferring it. When given the choice as a group of training on grass or plastic they always want to be on the latter.
I think it's one of those things that you just need to get used to, to appreciate. It's best not to consider the merits of artificial pitches versus grass at this time of year, when everything is warm and green and pleasant. We need to remind ourselves of the misery of the rock-hard frozen surfaces and mudbaths of January/February.
Every season the problems caused by weather cancellations are discussed at length on this forum; it's a perennial problem for Rugby, especially in the North. And those mud-wrestles that do go ahead on weather-affected surfaces are rarely thrilling spectacles for either the players or spectators - whereas a fast, open game is almost guaranteed on plastic.
I'm not saying AGPs are perfect, but the advantages they offer are undeniable.

Who is responsible for managing this?

What will be the outcome if players do not have the 'correct footwear'?

Lets remember, its L8 rugby, we cant expect guys who play social rugby to purchase new boots for just one game of the season, can we??

Just out of curiosity why can't you wear trainers or blades on them surely studs cause more damage than both other things mentioned as long as trainers and blades are clean I can't see a problem

I agree - and that leads me to suspect it's about litigation. The manufacturers and installers don't want people claiming injury compensation because they had no purchase on the surface and sprained/ broke an ankle or whatever.
However, for me there's a more serious aspect of playing on AGPs which escapes mention. You often see players with the little black plastic beads stuck all over their faces - I can't help wondering about how much of that stuff is ending up in their lungs and intestines. I can see that becoming a serious medical issue in future.

Bloody rfu... what they playing at??  They seem to be alienating grass roots of the game more and more