Cherrybim:: I am not looking to change my minhag. I just don’t believe one should call a widely observed minhag/chumra as shtus unless you want to quote a specific gadol who writes that it is a minhag shtus. In addition, you state that you have 18 minutes from when the matza goes into the hot soup. Hot water speeds up the chimutz process and therefore you have less than 18 minutes.
Sam2: It is well known that R’ Yaakov Kaminetzky did not eat gebrokts even though his family minhag was to eat gebrokts. I believe he knew all the gemoras you are referring to.