rex steiner is by far a cooler name than bron breakker but it's an exaggeration to act like it’s a make or break situation or that his career/popularity will be any different depending on what name he goes by.. if he get's the rocket he's gonna be huge regardless
the steiners have not been embraced on WWE tv in 2 decades so naturally they arent popular like that in WWE's bubble outside of hardcore smarks which I guess would make up a good number of people who attend the NXT shows, but on the main roster it’s irrelevant to the casual fan