Was it lack of intel that led to Yom Kippur War failures?

The rest is history.

This being that Jacob in his great plight to survive those arrayed against him and his family turned to the Most High G-d and with just limited human strength but with super-human faith wrestled with the much more powerful angel of the L-rd and actually overcame him not by the might of a biblical bicep but by tenaciously holding on to him and not releasing him till Jacob was granted the only thing he wanted and needed ... G-d's blessing and promise of survival. This he got and Jacob was transformed to Israel, one who fights with G-d and wins because what was sought was not human pride but G-d's protection. There does not need to be any lack of "intel" for any of Israel's future wars forced upon the Jewish State as we have been given ample advice and examples since biblical times on how to deal with those arrayed against the Jewish State & G-d's covenant with it.

Injusttice brings on wars. A fool or not could have witnessed live training exercises Sadat held before the war. A fool could have seen painted camoflaged lights in Giza well before the war. A fool could have written and warned those few in power. Those few who were blinded by their own position prestige and wholly disconnected from the fool who warned them many timnes over. And that Zeira broke up the cabinet meeting with false flag and all fell for it and dispersed days before the war demonstrates that injustice by Jew to Jew caused divine punishment.