At no point does that imply that damage is her primary job. There’s a reason why she says “I will be your shield” and not “I will be your hammer” or something similar. Brigitte has always been a very defensive oriented hero and she should stay that way.
Honestly, whoever made one particular highlight intro had her engagement down pat. The one where she jumps over the camera, deploys her shield to take some hits and then offers a helping hand to the camera. Seriously… whoever made that nailed it when expressing Brigitte’s power fantasy.