Slippery slope arguments are fallacious only when given without evidence.
People do draw lines, but their lines only ever appear as they age and stop being purely hedonistic. This “convenience” movement, on the other hand, is driven only by hedonists, and so doesn’t draw any lines, which is my entire problem with it. Each new generation pushes the line further towards progressively pathetic, petty behaviour before normalizing it. My evidence is all of history from when science became people’s religion.
Before talking about convenience, think about whether it’s actually justified, and what you’re losing because of it. Programmers are short-sighted individuals, so it’s no surprise they don’t think to do so.