I don't think this is correct. The QR web page is offering me connections for ORD-CCU (next summer) with 45 min in DOH, so it must be a legal connection. I believe that is in fact exactly the MCT (45 min).

Whether such tight connections are a smart idea is a different question. A friend recently flew CDG-CCU with a similarly tight connection and had to stay 24 hours in DOH, which is not any fun. How often do such problems occur?