I see what you mean, but Aerofly still added CRJ aircraft (CRJ-900) and the Bombardier Q400, which is around the same “popularity” for the public in your terms.
This shows that despite these manufacturers not being as popular as Airbus and Boeing, Aerofly still chose to add them to the simulator. Profitable or not, well known or not, these are very popular regional aircraft within the industry.
Fair