Only Bradford White can answer that, but to be fair, until Larry Weingarten and Waterheaterrescue.com appeared, who worried about replacing their anode? And for that matter, just try to get a hex anode out of a heater made by somebody else! You could make the same negative observations about THEM, for the same reasons, although the anode is in a different place.
My only grump with the Bradford anode is that the nipple is so short that it’s a guarantee that you’ll wreck the threads removing it to inspect it. Of course, I shouldn’t complain: that means you’ll buy a combo rod from Water Heater Rescue!;) Or so I hope…..