I think people are getting triggered by the word domain, and conflating it with a particular cargo cult called DDD. It's the same with agile - the one that's implemented is usually the cargo cult version that charges you the cost of the "official" process without the benefits.

I meant domain modelling in the simplest sense: I created three objects, the market, the trading strategy and a simulated version of the market. that's it. no paperwork, no forms filled in triplicate.