It’s the moderation staff’s responsibility. Sorry for nitpicking, I understand in this case it’s likely the same people.
I just get triggered when I hear that an open source software developer should have any responsibilities at all (maybe apart from some extreme examples), and I wouldn’t like this idea to stick in anyone’s head.
As much as I like the idea behind Pine64, make sure you understand what you’re doing - their devices usually need some time before they’re useful, they might underperform, etc.
On the other hand, they’re usually priced well for what they offer, and I think the ARM model of new PineTab might look better than their usual new offerings. Make sure to find out, how polished it is before you buy.