If you've got more than two braincells to rub together and are communicating with an ignorant listener, the off-the-cuff improvised toddler friendly vocabulary

If you've got more than two braincells to rub together and are communicating with an ignorant listener, the off-the-cuff improvised toddler friendly vocabulary version probably works well enough for you. The problem is when an improvised phonetic alphabet is being used because the speaker doesn't know a standardized phonetic alphabet. These people almost never take care to pick words that don't sound like other words. They think they're being helpful but often they're being less intelligible than if they weren't trying to use any phonetic alphabet at all. That is where the real benefit lies in teaching people to do it properly. It doesn't take long at all to teach a child the NATO phoenetic alphabet; your objection to the time it takes reeks of anti-intellectualism.