You're right, we should ignore a million acre feet of toxic water per year and instead concentrate on the problem of unquantified amounts of glass fibers that could hypothetically enter the biosphere.
If we paid proportional attention to these problems, it is not different from ignoring the fiberglass thing, because these problems are separated by many orders of magnitude in terms of scale.
I disagree. More attention upfront to lifecycle and recycling makes sense; not just waiting until things grow enough to be a big problem and then trying to figure out how to deal with it.
(I'm not saying the problem has to be solved while you ramp, but that it should be forecasted, considered, and improved.
