That’s not what I was talking about at all. The point is that the media constantly focus on Biden’s slip-ups whereas they try to normalize Trump’s obvious madness. It is of course perfectly legitimate to question Biden’s suitability as a candidate and I do believe he made the right decision to step down. But anyone who thinks Biden is unsuitable but Trump isn’t is either a liar or a moron. Or both. It’s usually both. And the media that promote this false equivalence are enemies of US democracy.
The main advantage of using what is basically dirt is that it’s dirt cheap. You need a metric fuckton of this stuff so the cheaper the material, the better. Also, molten metal is difficult to handle.