Honeyshack, I see things in terms of 'backlash' as the other way around. in terms of methodology, there are more folks who practice the treatment, 'traditional' methodology of the past 150 years or so than there are who promote the 'non-chemical' or non-treatment methodologies.
If you peruse the vast and many posts and threads of this forum alone, you will likely find it is the 'traditionalists' who frown upon and shout down the non-treatment folks.
As this non-treatment wave have come about, the discussion has become more vocal to be sure and there are some folks who become as judgmental and 'over-lordly' as many of those who wish to impose the 'traditional' methods upon everyone.
Personally, I would suggest that regardless of methodology, we should stop trying to force our ways onto others and simply accept that we do things and see things differently. As long as we are all doing what we feel is our best to keep honey bees alive and offer help to those who ask (but not make sweeping judgment) then we will be in a good place.
Now, in terms of the actual topic, This is a big issue with the organic certifications as well. Unless one's apiary is essentially isolated from any other bees, chemically treated plants, etc.. there is no way to guarantee that they will not bring in substances from other hives they robbed or pesticide covered pollen, etc..
I think the closest you can come is to say in your bee yard, you work to create a certain environment and hopefully, it will be maintained that way, more or less.
Big Bear