Boy would you not like my code. It's full of neologisms. Undivify. Wipeage. Calcval. Zillions of them! I'd say this makes my code better English, not worse. I choose words carefully and do not hesitate to make a new one if existing ones don't communicate just what is wanted. It's not an arbitrary process and has nothing to do with sloppiness or vanity. It has to do with making the language fit the problem.

Oh, and I use "performant" all the time, too. What other adjective signifies the qualities that programmers have in mind when they say "performance"?