Congratulations for this export. JF-17 is a success story, never mind what detractors say. I have watched this project go from an idea in 1993 to a success that it is now.
It is a great multirole jet with a very quick turn-around time for generating multiple sorties; and it can carry a variety of munitions for various purposes. It is not a strike aircraft and therefore geared more towards defense than offense. Deploying JF-17 is not a signal of aggressive intent. It just means that the operator takes defense seriously. If an airforce has ambitious growth plan, JF-17 is a perfect fit.
JF-17 is not a major threat to Bangladesh. BAF could afford something different with perhaps a bigger payload. By deploying JF-17, Myanmar has forced Bangladesh to step up their modernization with something more expensive. Once that happens, Myanmar can work on an antidote. Point is that the Myanmar has seized the initiative and Bangladesh would feel compelled to react.