I feel that to really make this work you would need to filter words with common origins. Like, if one word appears in the dictionary definition of the other word, they likely aren't going to be funny.
Examples:
YOU PUT THE REFINE IN REFINERY.
YOU PUT THE DETECT IN DETECTS.
YOU PUT THE POLYTECHNOLOGY IN POLYTECHNOLOGIES.
But words with no commonality at all and a good rhyme are brilliant.
Hmm, rhymes don't really do it for me. I might even filter out rhymes if I built this. I've heard humans use this format often enough, and I don't think I've ever heard someone use a rhyme. It's just too easy. Putting "the cologne in colonialism" is significantly better.
Yeah, I think the currently allows 1-phoneme differences. I think it would be better if it only allowed 2-3+ phoneme differences when at the end of the word. -s -ies -y arent interesting suffixes.
There are also some that are just nonsensical but when you read a dozen of these in a row, they feel actually kind of funny. Just tunes your brain to a different wavelength.
Examples:
YOU PUT THE REFINE IN REFINERY.
YOU PUT THE DETECT IN DETECTS.
YOU PUT THE POLYTECHNOLOGY IN POLYTECHNOLOGIES.
But words with no commonality at all and a good rhyme are brilliant.
YOU PUT THE RUDENESS IN SHREWDNESS.