> I'm against anybody who can convince you to open a PDF being able to hack your device to do whatever they like with it.
Who is saying this part?
Asking for an open device does not mean supporting malicious hacking of others. This is the single biggest false equivalence used by Apple and the rest of the industry to keep a closed ecosystem and restrict users' control over stuff they paid for. And people continue perpetuating it for some reason.
If you phone is hackable by you, what stops someone else from hacking it? Ultimately, it's a trade off between security and openness, and I think it's good that there are choices on both sides.
Nobody said exactly that, but your first comment pointed out how cool the capability is without acknowledging that it is trivial to exploit maliciously.
We're on the same side here. I daily a Pixel with LineageOS and root.