No, you're wrong!
So far during the very limited play he has had at CornerBack this 2022 season, Kelvin Joseph has been bad at the Catch Rate Allowed, Passer Rating Allowed, Coverage Rating, Receptions Allowed, Yards Allowed, Yards Per Receptions Allowed, plus given up 2 TDs.
This is most likely why the Cowboys jumped and immediately picked up Trayvon Mullen when he became available a day or two ago. If Joseph was playing better this season, the Cowboys would not have been forced to pick up Mullen, thus costing another roster spot on the 53 man roster.