In general 'being close to land' and agriculture is a death sentence for biodiversity and the environment.

My comment 'being close to land' was alluding to Ian's post. It is unlikely that he would advocate agricultural practices that are harmful to the environment.

As you say:

Solutions are only taken seriously in terms of how profitable (in monetary terms) they are to land owners

This dovetails to what I said:

It is also defeatism in the face of the neoliberal capitalist system we have here in the west.

In other words if you change the current 'for profit' system that would be the first step towards dealing with the problem. There is no harm in dipping one's toes into living off the land, organically etc except that it perhaps misdirects one's efforts to change the system first.