The idea is that the words are hard to read and it is easier for a human to identify them this way. The extension even allow the use of the words in different languages.
This is affecting the security provided by CAPCTA in an ignorable way because there is a very very long list of words.
If you would had asked on the forum or by email I would had showed you how to modify this. It's very easy to change them to random strings of characters.
So maybe the really stupid thing is to complaining about something without asking for help about it.