I'd agree with this. I can ejaculate without anything that even resembles and erection, all I have to do is continuously roll the soft head of my penis between my finger and thumb for a minute or so and i'll cum. If i'm watching alpha bulls, slutty wives or sub cucks/ sissies I can cum in less than a minute. Plus, your brain does sort of rewire itself, and once you start to compulsively masturbate to cuckolding porn, large cocks etc. and your orgasms become stronger, your brain just finds the shortest path from A to B.
So regular porn/sex becomes that brand of budget beer your not that fond of, but you'll ******* it if your thirsty enough, but cuckolding, well hung aggressive bulls with copious amounts of semen, slut wives and cocksucking sissies, becomes your favourite brand of beer in an ice cold glass, that you always crave.