Yes this is a problem, but one cannot know how significant it may be.
One feature of municipal composting which reassures me is the high heat they achieve in heaps, through shredding and then constant turning. On the other hand this high heat does kill fungi too and other beneficial organisms, so the compost is a relatively inert organic matter.
At Lower Farm I stopped using it in the last three years but I have found it useful here to make new beds and for initial mulching.
