I would just like to understand the mental process that evolves a conscience from "This is probably fine" to "That’s what I think we actually did [just handed a

I would just like to understand the mental process that evolves a conscience from "This is probably fine" to "That’s what I think we actually did [just handed a 4-year-old a loaded weapon]". In my moral calculus giving a 4-year-old a loaded weapon is pretty damn distinct from implementing a social media button for teens and older which among its negative aspects facilitates cyber bullying or other negative social behavior. With people equating the two it's probably not even that facetious to write a cliche that goes like "first they came for my retweet button, then they came for my 2nd amendment". (Edit: I did think of one mental process that's not just the easy "say whatever in front of the media" reason, but I don't think the guy is making a more interesting consequentialist dust-specks vs. torture type of claim.)