My point was the immediacy of it, even recruiting a friend to help reach the prescribed round count. It's like you leave the gun store, figuratively speaking, with the gun and this big stash of ammo that is virtually part of the purchase. Break-in is treated as a rite.
It seems to me that a mag or two of various ammo options, seeing what works (or not), plus a box, maybe two to get comfortable with it, and one can settle back and just stick to the shooting budget, if there is such a thing. If there are any malfunctions, how long is it really going to take for them to show up? Who knows the magic round count or exact process. We just follow a list or rule of thumb that some guy made up, with all due respect.
I am skeptical and am just asking for some good arguments for the validity of all these procedures and what seems like voodoo ceremonies with new guns.