For sure, "bring enough gun"
But let us add "do not bring more gun than you can shoot well"
And "bring the gun you like" (PS as long as it is legal)
1-
The issue with the argument "just make sure your first shot counts" -- which is a solid recommendation -- is that often enough the first shot actually does kill clinically, but the DG is still ambulatory enough to do damage. There is so much evidence of DG charging with a perforated heart and collapsed lungs that I do not expect this point to be challenged.
And occasionally a first shot hits a branch; or the animal moves as the sear breaks; etc. etc. or God forbid


!!! the shooting is not perfect
So, doing one's best to not cause of wounded DG situation is the right approach, one I practice myself, but the outcomes remains an act of faith.
2-
The issue with the argument "any caliber will brain an Ele or Buff and this will stop the charge" is that a Ele or Buff brain is a lot smaller a target and a lot more difficult to hit on a charging bull than a full head.
There is ton of documentary evidence, and entire books were written by folks who killed more DG than any of us will ever encounter, with more calibers than any of us will ever own (e.g. Taylor) that a larger "stopper" caliber (.45+) can damage or stun a charging DG enough to buy a few seconds for a more final shot. I also do not expect this point to be challenged.
3-
So, in the end, the question is not whether one trades a "cannon bruise" for a "laser-like hit" with a .375 because this is a false dichotomy: a .458 in the right hands is just as accurate as a .375. The question comes back, as previously discussed, to personal abilities, personal beliefs, and personal choice.
Some believe they will shoot well enough that they will never wound; some prefer a one-rifle safari approach; some dislike heavy recoil; some dislike carrying heavy guns; etc. etc. and on the other end, some are not bothered by the weight and recoil of a stopper caliber, and want to be best equipped should things get dicey.
As long as the choice is legal, and I will add, ethical in respect to the animal and the potential danger it causes to PH & trackers, this is a personal choice.
Certainly, the wisdom has long been established (the "bottom lines" I was proposing earlier):
-- make the first shot count;
-- shoot a caliber you can reliably shoot;
-- do not confuse killing and stopping;
-- a client's job & gun are different from a PH's job & gun;
-- etc.
And the wisdom has been captured in legal requirements (minimum calibers), as well as famous quotes, "it is the dead ones that kill you"; "bring enough gun"; etc.
4 - The two root causes, I guess, of the discussion we are having, and that has been had many, many times before us today, is that:
- "a man's got to know his limitations" is generally and sadly not included with "bring enough gun", and that translates to "do not bring more gun than you can shoot well"
- "there is more than one way to skin a cat"
I am on the side of "shoot well", "first shot count", "do your best not to wound" etc. and if indeed you cannot shoot a .458 or .416, then you must shoot a .375. And even if you can shoot a "cannon" well, by all means, bring a .375 if you prefer. It is no peashooter, and it is legal and ethical.
I personally think that
IF YOU CAN shoot a 40+ or 45+ caliber well on DG you have an edge on TIA, and both historic and current PHs choices place me in a comfortable vast majority. Darn close to unanimity, actually. I respect this entourage
But
IF YOU CANNOT shoot a 40+ or 45+ caliber well on DG, like my wife for example, it does not make you a lesser hunter or human being, and going down to a .375 is not a choice or a trade, it is an absolute necessity. Or, as in her case, even going down to a 9.3x62 is the right decision.
And if you can shoot a 40+ or 45+ caliber well on DG but you
PREFER a .375, by all means have it your way, it does not bother me in the slightest, and it certainly does not irritate me, but do not distort the reality that a stopping rifle is a not myth, or that it can be shot accurately