[InclinedPlane]

The contra position would be that honey bees are responsible for supporting less than 1/3 all food production (which is a bit easier to prove). Bees are important pollinators but there are other pollinators and the case that the absence of honey bees would result in the absence of 1/3 of crop production is very weak, since the absence of competition from honey bees would likely result in some degree of compensation from other pollinator species (such as wasps).

The 2nd reference is the best so far, it provides some quantitative information about how dominant the honey bee is as a pollinator of commercial crops.

Personally I think bees are hugely important and it's quite sad the way bee populations have been mistreated, but it doesn't help to overstate the case (the case for being kind to bees is already very strong).