GrapheneOS isn't available on all phones. I have bricked phones trying to install different OS on them. You might consider warning people against such potential consequences.
All I can do is use sliders to block cameras while still allowing me to use them when I want to, and just never use my phone to go online, never set up a goolag account, and never carry a phone outside the house. This is VERY inconvenient, but I consider being surveilled and tracked wherever I go a grievous insult, and I'd rather have less convenience than be tracked and surveilled every minute of every day.
Thanks!