The sponsor brought the amendment, which tells me that he listened to the criticisms and understood their merit. That's something we should be encouraging in legislators. I've known Denley his whole legislative career and think very highly of him as an individual, so I'm glad to see him amend his bill down to just the water issue.
Process wise, he could have done three things: Stand up on the floor and just go for it as is, recognizing it was a supremely flawed bill and hope for the best, 2) ask for the body to kill it, 3) Amend it to try and fix the issue.
I would imagine he has constituents who want the bill to pass, especially the relevant portions that remain and while the idea that commenters should have some "skin in the game" is not entirely unfounded, the approach was wrong, as recognized by the sponsor.
Quality move from a good man.