Both of those have one fatal flaw -
the exposure of the “clean side” to the unfiltered water.
I guess if you look hard enough you will find fault with anyone or anything.
The caps, drinking side are closed from filthy water. Just follow the instruction and live.
I used my lifesaver in Mexico. I was at the Big Pyramid, of the Coba ruins and dropped into an alligator pond.
The locals thought I was crazy but when I produced water and just started drinking it they wanted to know how to get one.
Sadly, many in Mexico have to go to a store for their water and they looked at this a an opportunity to save money and time, while providing safe, clean water, anytime.