IETF should keep XMPP as IM standard, instead of Matrix

Why IETF should keep XMPP as IM standard, instead of Matrix? Hello Folks! Here are my thoughts on why IETF should keep XMPP as IM standard, instead of Matrix. Which is the best IM protocol that exists today? When I asked this to my dear friend, whose work is related to evolutionary biology, he replied "I have no ideas when it comes to computers. But I know this. Anything in this world that has survived for a long-time, had to be fit to withstand selective pressures. So look at what existed for long time, that's probably has properties to adapt well." By design, XMPP has these evolutionary properties, whereas Matrix does not. This is the very situation where matrix devs should have made use of the properties of XMPP to improve it. Even the outstanding feature of matrix, decentralized conversation store, could have been implemented in XMPP as an XEP. Imagine the time and effort spent on improving XMPP, instead of reinventing wheels in matrix. FINAL THOUGHTS: Please note that these are criticisms towards Matrix over XMPP, not hate. It is my current notion that, it will be better for XMPP and Matrix devs to combine their efforts by improving XMPP and bring matrix features to it via XEPs.