For people wondering why people are saying too fast is because traditionally Tekki Kata is observed as a Shorei kata which has emphasis on hardness and explosive movements as well as pause after each movement, however it's beneficial to train kata in soft snapping movements as well as hard explosive movements. You understand the kata better and how it is a tool that can be used to mold you in different perspectives just like Sanchin kata's concept can be used to Taikyoku Shodan. Kata is simply a way of remembering the moves we were taught and a puzzle to decipher and decode over our lifetime!
When I was taking shotokan karate I learned heian sandan, heian nidan, heian shodan, reason I stop taking shotokan karate because I was busy doing kendo, iaido, and aikido, it was all too much so I do aikido and iaido however I like watching karate.
