No it is not. The original purpose of kata, was to be step 1 of the Shu-Ha-Ri process. That purpose is to teach and study the core principles. Memorization of a kata does not equal mastery of a kata. Once you have memorized a kata to the point where you can do it without thinking... you are now ready to begin studying that kata. You cannot study the kata, if you are busy trying to remember what comes next.
There are many people with all kinds of trophies for kata contests.... who think the kata is all there is. They can perform the moves beautifully... but have no idea what the core principles are that they should be studying. Karate does not have wrist locks, because I cannot find them in the kata. Karate does not have take down defense because I cannot find them in the kata.... You hear these statements from people, who are very good a performing kata, but who do not understand what Karate is or what the kata is. Its not a catalog of techniques defining the techniques of a system. Its not a combination list, defining the combinations included in a system. Kata is the physical expression of the core principles and fundamentals of a system. If you understand them, then you can use any move or technique or combination... and as long as you are adhering to the core fundamentals... you will be doing Karate.
When you learn a language, you use a grammar book. You do learn and memorize words.... but the most important thing is that you learn how the grammar works. No one expects that you will be speaking English if and only if you use only the words found in the grammar book. The expectation is that you will be able to use all the words, both currently existing and any new words that come along. You will be able to use these new words and still be speaking English, so long as you are following the rules of grammar... (or at least close enough.... ) There is also no expectation that there is only one grammar book that can teach you the English language. People who use these grammar books go on to write and speak at various different levels.... in various different styles... in various different formats.... all speaking English.
Kata is like the grammar rules. The Style of Karate is like your grammar book. The real problem with Karate, is too many Karateka confining themselves to the vocabulary found in the grammar book and mistaking the grammar book for a Karate dictionary. The bigger problem is that these people, who do not really understand what kata is and how Karate was setup, go out wanting to change Karate into something better. They want to change Karate so that it will include new techniques.... Karate already does include new techniques, it includes all techniques. They want to get rid of kata.... but then they have to find a new way to teach those core principles and fundamentals.... but since they never found those principles and fundamentals.... I am not sure their replacement would include them all. They want to pressure test Karate more.... thats a school issue.... get out more.... there are plenty of Karate schools out there that pressure test the heck out of their stuff. In short, all the things people want to add to Karate, are already there.