Here's the definition of economics right off google: Economics is the social science that seeks to describe the factors which determine the production, distribution and consumption of goods and services.
Economics has a number of definitions, and in the context of using a verb like "adhere" it makes more sense to assume one refers to a definition along the lines of "economic conditions," a definition also easily available with a quick Google search. Your use of the adjective "American" further reinforces this reading, since "American economics" is not a uniform branch of economics as a social science, while "American economics" with "economics" defined as "economic conditions" is something that can actually be defined and makes sense (the economic conditions of the US).
If you were using the definition of economics as a social science, then your phrasing was exceptionally poor. More likely you were not thinking too much at the time you wrote it and are now backpedaling.
I don't practice the American social sciences that seek to describe the factors which determine the production, distribution and consumption of goods and services
Putting aside the fact that I question whether this was the relevant definition of "economics" used in the first place, as explained above, you "do" practice those "social sciences" by virtue of the fact that you participate in the American economy, like almost everyone who lives in the US. You can't make a profit off of owning property (as you claim you do) or even work for a wage without participating in the system. Saying that you don't "adhere to" American capitalism and that you don't "practice" American capitalism while participating in the capitalist economy, even extracting rent as a capitalist, is nonsensical. You don't understand this because you are an ignorant liberal who thinks economics and politics exist as idealist forms separate from material reality. This is the one thing in this thread Yamon has been correct about, albeit unintentionally.
In other words, I don't adhere to the studies of economies presented by popular American interpretations.
That's fine, but this meaning was not at all "obvious" in your original statement, which was your original contention. I await your apology for being a stupid fucktard.