But the "opt-out" will not prevent ecosystem effects caused by the default shutdown of convenient app installs due to the policy. Not even for GrapheneOS users. It's a global policy by a body we never voted for. You can't opt-out of that different world by waiting 24-hours, the ecosystem could have permanent effects. This is coming from a company that doesn't even bother to expose a permission to disable Internet access per app. It's there underneath, but they just ... don't expose the choice.
Is it really going to have ecosystem effects? Surely the small portion of power-users who are bothering to intentionally sideload apps can click a couple of buttons. Or just load via ADB and avoid the entire thing.
The entire point here is to prevent scam actors from using a false sense of urgency to defraud people. That is a serious vulnerability that needs to be addressed somehow, and I think this is a good compromise that doesn't impact people's ability to sideload.
I say this as someone who sideloads apps literally every day.