what makes then unsafe for human consumption? I'm all for abandoning half baked ideas if they're impractical.

Here's a small clip of it from 2019, don't know how much traction it's gotten now, but he's not trying to make a massive profit off of it seemingly as the core motivation, which is nice to see.

There is a guy supplying some areas like flint michigan with condensers that pull humidity out of the air and turn it into drinking water. It's cheaper than desalination but I don't know if it'd have negative effects on the surrounding environment at a large scale.