It may be he sees the direction the market clearly has to go and is making a bet that humanity chooses to survive rather than face civilisation collapse and hen

It may be he sees the direction the market clearly has to go and is making a bet that humanity chooses to survive rather than face civilisation collapse and hence he is in a position to profit well from that. He could also be the change he wishes to see buying and using farm land for the products that make a future possible. There are a number of possibilities for why he might make those purchases and making these comments, they are almost certainly linked in some way.