Well, we can talk about dropping atomic bombs on Japan during WWII if you want. The discussion isn't going to be a very simple one.
Besides, slippery-slope arguments are weak because predictions based on precipitating events rarely pan out to see our worst fears realized. As an extreme example, one could get wrapped around the axle fearing that a child squashing an ant in the garden could end up being the next Hitler.
You can hold more than one thought at a time.
Media manipulation is a thing, and here's an example of it - they must have thought it's not a big deal, since they're so callous of showing the man behind the curtain. If you don't find it a problem, speak for yourself. There's many, many stories of how Facebook manipulated during the US election cycle. Also not worth thinking about?