The Meta XR Plugin and Meta XR Platform are distinct. The Meta XR Plugin is designed for 5.3.2, and regarding the Meta XR Platform, they have not updated it since nothing new has been added (it’s a simulator). The Meta XR Platform should not impact your APK at build time (and you don’t even really need it in my opinion).
One thing to check is the NDK version is correct, this can sometimes give this error.