The "other ingredients" in the referenced glyphosate product are precisely what make it inappropriate for aquatic use.
Most terrestrial glyphosate formulations contain tallow-amine surfactants - which should never be used in aquatic sites, ever!
If you feel that the casual observation of minnows not dying after such uses is adequate to rationalize the misuse of a pesticide, that's your business. However, I would caution that there's a little more to it than simply 'the minnows didn't die'.
Also, it is rather risky and presumptive (IMO) to insinuate that others may disregard a pesticide product's label.
"The label is the law" is more than a slogan in my industry. It is a fact! Google "FIFRA".
There are valid reasons why some terrestrial herbicides, which contain the same "active-ingredient" as similar aquatic herbicides, should not be used in place of the aquatic counterpart. The respective product-labels will not "spell out" such reasons - nor are they required to do so.
I'm very puzzled when someone consistently voices an aversion to using herbicides in their pond; but is nonchalant toward pesticide label restrictions and instructions, and defers to frugal-based misconceptions when the time comes to actually use them.
