It seems to boil down to which you fear most:
(A) Needing more than six rounds to stop the threat.
Or
(B) A greater chance of a malfunction that will temporarily stop your handgun from working (failure to eject, failure to feed, hard primer, dud round, all of which can stop an otherwise perfectly functioning autoloader).
Personally, I'm honest enough with myself to know that I don't practice failure drills often enough.
And from what I've seen at the ranges I frequent, very few shooters practice failure drills at all.
They aim, squeeze, BANG, squeeze, BANG, squeeze, ....nothing, puzzled expression, slowly lower the pistol and lock the slide back and try to determine what's wrong.
I can't recall the last time I saw someone instantly spring in to a malfunction drill...tap, rack, or rip the magazine out, rack, rack, rack, reinsert the magazine, rack...
I've seen it at competitions, but most shooters don't compete.