The Quad is nothing more than a divisive mechanism that the US created to make Australia, India, and Japan its pawns in the Indo-Pacific in an attempt to destabilize the entire region and gain a strategic advantage against China. Given that the three nations can't just turn their back on China, divergence will continue to prevail in the grouping.
Over the past two decades, the Quad has grown from a humanitarian aid cooperation to a sustainable and solid grouping that wants to keep the Indo-Pacific free and open — but whose agenda goes well beyond traditional security concerns. While there are mutual concerns over Beijing's actions there, this is by no means an anti-China group.
There's a 12% chance that there will be a US-China war before 2050, according to the Metaculus prediction community.