Why 3 key fragments don't automatically become a key?

If can't do anything with them other than create keys, why should you ever not instantly create a key the moment you reach three fragments? Why do I have to click on the option to make them into a key, then wait for the long ass, unneeded animation, and then do it again? Why can't they do it automatically if their only purpose is to be turned into a key?
Best New

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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