Yehudis, I addressed the other rishonim who argue with rabbeinu tam; it’s you who omitted his shitah. They never said that chazal wrote conclusions in gemara which are wrong. The only rishon who may have said that there are statements in chazal which are wrong at the end of the day is rabbeinu avrohom Ben harambam, but even he didn’t address directly when chazal darshen a pasuk. That opinion in either way was rejected by rishonim and achronim across the board, and was deemed “assu to say” during the slifkin affair.
Contrary to nomesorah’s claim that it’s not “revolutionary”, the slippery slope you went down where you can reject other things chazal say is totally, unequivocally baseless, and there has not been a single shitah ever who says that they said hashkofa things that were based on their time and place.