No doubt he would be talked to but by teaching that Jesus is Michael the archangel, the JW's really cannot technically do anything about it.
Krismalone,
Going by your logic, why don't we call a mango as Mangifera indica? Or why don’t we use Solanum lycopersicum instead of a tomato? Both are scientific names and are used in botanical science.
Imagine if Masterchef or any other show starts using these scientific names instead of common names, would they make any sense for us even if they are technically correct? Your science teacher may use the scientific name during lab practical; but in your kitchen you use the name tomato. Each name has its own usage and purpose and is used where it is appropriate and fit.
Similarly, the name Jesus Christ is used in prayer to address his role as a redeemer and saviour, whereas the name Michael the archangel has a different purpose as his role as a prince and a warrior and is not used by believers while praying.