I haven’t been keeping up with this thread, but I think that “everyone” agrees with that. However, check out this link, How Early Buddhism differs from Theravada: a checklist and look at the first topic “overdetermination of not-self.”
Some Bhikkhus argue that “there is no self” was less of an ontological teaching, but instead more of a perception that one develops (in or out of meditation) to perform the duties of the four noble truths. (Look up Thanissaro’s Selves and Not Self).