hey, I have to unfortunately tell you that that "my" EdgeTx version is massievely out dated and not supported anymore. You don't want to use it. Use the MAVLink for OpenTx firmware.
no, elrs is certainly not full mavlink capable. At least not as of today, and I think it would need major changes to get it. You may find this a worthy read: github.com/ExpressLRS/ExpressLRS/discussions/1352#discussioncomment-3229199
