Again, this isn't a question about misuse.
Clearly, any random person can die simply from drinking too much purified water.
This question is addressing manufacturer liability and responsibility to customers.
Can we stay on topic?
Quite frankly, I'm not sure if it's even allowed to question accountibility in relation to certain products on this board so I'm asking in general terms as to what the justification would be.
What are the ethical and legal grounds for immunity?