Even before patch whms did miss enough hits to go for melded jewelry. Now the situation is alot worse since its not really worth to dps at all without melding even in normal content.
I don't think its really fair to require healers to spent huge piles of gill just to dps a bit. If the miss rate would be same as it was before patch ppl could still put out some dps without melding and it would be enough to get those ppl that really want to go further
with dpsing to meld acc in their gear.
In HC/tryhard content I think its fair to require bit more acc since its there to push limits, but in normal / casual content should be able to dps without spending fortune for gear.
Also some healers use holy for other than dps purpose so it can be sucky thing to just waste mp and gcd for misses.