An angle not discussed on this thread, is the proliferation of various daf yomi shuirm out there on the APP. Many people who wouldn’t learn otherwise are now learning thanks to these apps. Without Daf yomi this wouldn’t be possible on this scale. To be honest, there is a downside too. Certain people who would learn otherwise now use this as a crutch. Some of these shiruim are here to make it cool but lack the full substance that someone should have when learning gemara. The fact that its a fad and a party does lack in the shimo a bit. But on the other hand its what draws people.
My key point is, that without daf yomi these shuirum wouldn’t happen and many wouldn’t learn