Yes, that's a fair point. Though, there are other materials that might be explored (types of metal perhaps?) for those that would prefer a non-plastic version.
The reason some might be concerned is that when "food-grade" plastics, like the polypropylene used by aeropress, are used and "exposed to hot water, they release trillions of nanoparticles per liter into the water."
The slight pressurization and the friction of the rubber plunger likely amplifies that result.
Thanks for the Snopes link, that gave some more context. I still can't believe no one figured out who she and the others are. It's just mind boggling to me, maybe because she's young-ish, that no one was like oh my god is that Sharon??
I mean, that someone can live and do whatever they do, show up to this event with no mask and do this, and then go back to living a normal life is crazy to me. People lose their jobs for saying something racist on camera, and this person is full nazi-ing it up seemingly with no social consequences.