Macintosh Blades rule. Blades that you are familiar with, should be used.
Pediatric attendings and residents and fellows train with much much smaller MILLER Blades. Sizes 00, 0, 1, 2 exist. Those blades are short and stumpy. So short that a MILLER blade that it starts looking like a MACINTOSH blade. Look at pics below.
I have thought it may be best theoretically have a peds person to intubate an adult aged difficult airway with a Miller 3 or 4 blade no? But nope. Too heavy of a tool, that then becomes a weapon.
Then the resident, p.a., respiratory therapist, or paramedic who almost only uses MACINTOSH blades and only used it once or twice on a partial skills trainer, shouldn't likely be using a MILLER blade that they are poorly trained in. Use that Macintosh #1, or #2 blades if you find it.
Macintosh blades in effect.
Practice as suggested and you will realize truth versus mythology. Reality versus voodoo.