Per talking heads on War Room, he will do ANYTHING to keep the Speaker position, including making these promises. (Which he probably would not keep, even if in writing.) Too many of his supporters are depending on him to protect them from the constituents knowing the truth about them; their alliances with CCP and lobbyists; and other shenanigans. As Speaker, he would have the power.
Probably why he hasn’t committed to releasing the J6 files- i guarantee there’s plenty in those files that would embarrass McCarthy and the other RINO’s