This is a weird set of examples.
To start with - the top 1% is a relatively accessible level of "rich." That's an L5/L6 software engineer at Google, or a mid career doctor. Are offshore tax shelters actually available and economically feasible to these people?
As for pass-through businesses: I had a pass-through LLC when I ran a consultancy. Was I engaged in tax evasion? I'm pretty sure I wasn't - as I understood, this was exactly what I was supposed to be doing. I think you're essentially required to do this if you run businesses where you're the only partner (but I could be wrong).
But even if you're not - that's not a 1% thing. That's basically the best practice pursued by anyone running a single member LLC...which describes a huge number of small businesses. A struggling bakery would realistically have pass-through income.
I don't know what "complex conservation easements" are so I can't speak to that.