They are all Abrahamic Religions. But that hasn’t stopped nearly a thousand years of conflict since the First Crusade.

They’re the same god in the sense that those religions claim they are the same god. But they are different in the sense that they are part of different religions that have long lasting disagreements. Abraham =/= Jesus =/= Muhammad. So they are different gods in the sense of what people kill each other over.

Hopefully this kind of attitude will lead to peace between these groups in the future. However, I think we shouldn’t uncritically take what religion tells us at face value. Of course it’s all made up, but the reasons it was made up are important.

Jews decided there was only one real god so they could invalidate other religions. Christians decided that god had a son so they could both benefit from the religion Jews started while also invalidating those same Jews. Muslims decided that a guy got an update from god so they could invalidate Christians and Jews while still benefiting from those religions and the idea of a single god. It’s about using religion as a source of legitimacy for power.

Monotheism, or least pretending to be monotheist, has benefited religions, so no group wants to give that up. And it was probably seen as way to convert people from older religions. Again, hopefully ‘they are all the same god’ will be used to unite people in the future, but it’s important to understand ‘they are all the same god’ was about leveraging existing beliefs for power. edit: word choice