Having a different opinion to yours doesn’t necessarily mean it’s wrong. In this case, it’s you who lacks tolerance.

Just speaking about the most common movies not scify or fantasy.

To my knowledge, desalination plants do not recover salt from brine. There is a European project that is studying this feasibility. Generally, brines are discharged into the sea, which is destructive for the environment due to their concentration.

It seems to me that films are supposed to be as close to reality as possible to be credible.

Around 5% of the population. So yes it’s overrepresented

My comment refers to overrepresentation.

It’s not a question of being visible in public, it’s just a question of proportion. Hollywood seems to need gays and lesbians in every movie now. Is it marketing to attract “minorities” ?