You can answer it yourself, but here goes: Because the trivial investment you have to make to learn these ubiquitous abbreviations might (no general judgement m

You can answer it yourself, but here goes: Because the trivial investment you have to make to learn these ubiquitous abbreviations might (no general judgement made) be outweighed by the benefit of better readability once you made that investment. "propertyCount" is 6 characters longer than "propCnt". In arithmetic expressions this can easily amount to 12 or 18 characters saved. I suggest you point out a specific example and show how you would do it in a better way.