(Attributions removed since it doesn't matter.)

Why not use standard phonetics?
Because it's not as much fun..!
The fact is that the cutesy phonetics don't always get the job done.

Depends on the job that needs doing.

If you're trying to get your call through during a hectic contest or
when conditions are poor, cutesy phonetics are not appropriate.

If you're just having a good time and conditions aren't an issue then
cutesy phonetics can provide a pleasant chuckle.

Different tools for different jobs . . .

73, Steve KB9X