There are also people here who think climate change is propaganda, and probably even some that think the moon landing was faked. That doesn't make any of these things true.

I agree. However, if you posted on Prison Planet something that might seem blasphemous to that line of thought, you might run into some backlash. Here, you might run into someone who thinks your property rights trump the rights and needs of others. I'm not one of them.

still I would love to know what the restrictions for that parcel of land is. are they unlawfully restrictive?

The problem is that in many areas the land use restrictions are very similar to regulated businesses, there to protect those who came first and don't want competition or others near them. While I think a shipping container is absurd I want to know, what is the restriction on building a house there?

Most councils/cities won't allow you to just dump a shipping container on a bit of land. It's unsafe.

If you can properly secure it, demonstrate its structural integrity, fire safety etc then it's usually fine.

The only thing unsafe about a shipping container is that one could (with some difficulty) climb on top of it and then fall off. Or I guess someone else could lock one inside, but that seems like a voluntary violent action rather than negligence per se.