Blanchardstown Megalithic Tomb - Shards

I mentioned my Blanchardstown Megalithic Tomb poems in my last post. Since then I came across this on the Magma poetry magazine blog. It seems that Shard is one of those words which should not be used in a poem. This is because of overuse in the past - a single shard of light, sunlight, moonlight, sky, memory, love, etc.

I'm afraid I've used the word once or twice in my Blanchardstown poems but only in its proper meaning, A piece of broken pottery, especially one found in an archaeological dig. In my poems archaeologists of the future are excavating Blanchardstown and obviously finding shards. Will I leave the word in or take it out? Don't know. Must look at it again.