Hmmm... Maybe because I'm not a native speaker, but, well, I don't get it :-) Could you explain ?
The relevant term here is _phonemes_, the individual chunks of sounds that make the phrases up; these two phrases have shared or similar phonemes in typical English diction. e.g the first two sounds are both “reh”, “cuh”
I helped Apple wreck a nice beach
I helped Apple reck a nize beach
I helped Apple reck ug nize beach
I helped Apple reckug nize peach
I helped Apple recognize speech!
Saying “recognize speech” makes a sound that can be indistinguishable from “wreck a nice beach.”