BTW isn't it strange that there is no default option to show more then 2?
Are you talking of the "Gender"- question?
There are a few explanations.
All these questions ("Y/N", "M/F", "5-point-array",...) were implemented a long, long time ago. Nowadays they are more or less obsolete; I never use them.
My opinion is: Only for the lazy ones. And how often do we have a question like "I use the 5-point-array. But I would like to have 6 options".
Nowadays we have better question types or question themes to be more flexible.
And: it isn't strange at all. To offer something you seem to expect (a special question type "gender" that reflects the legal regulations in all countries of the world) is obviously both complex and unnecessary (question type "single response")
And you have realized already:
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