It is a DIY setup. We had one of those bottle setups like you describe. For my big dogs all it did was slowly become more slobber than water. I realized the problem wasn’t more water but getting rid of the slobber.
Post above describes what I did if you’re interested.
I think this comes up every year or so and never amounts to anything other than some headlines and a bump in Republican rah-rah.
However, when I follow this line of thinking to its conclusion it scares the shit out of me. It ends with armed militia showing up at my home to “enlist” my kids to be cannon fodder for these assholes’ holy war against the Yankee libs.
The feeling of inevitably and helplessness is crushing.