People are thinking of the firewall here as something external. You can do this without outside help.
Who is this source. Why are they telling me this. How do they know this. What infomation might they be ommiting.
From that point you have enough infomation to make a judgement for yourself what a point of infomation is.
I could see myself with a heavier device, especcially if its safer from catching on fire. But mass market might disagree. Sodium battery replacments could be a thing for more modifiable devices though.