There is not one definition of “landscape photography”: the word ‘landscape’ is a euphemism, standing essentially in opposition to the studio that preceded it, and ultimately to any kind of restrictive frame – it is a photography that is free of rules.
This sort of fits all art genres. You can pontificate about what you're doing being "free of rules," but what that actually means is you haven't a clue what you're doing, and don't want to take responsibility for the results.