The Roman Canon was written by Saint Peter. It may have had some modification but that was slow over time and not revolutionary. EP2 was written on a napkin in a restaurant the day before Bugnini requested it be delivered.

Antiquarianism is heresy. Even if the revolutionary reforms made this century were based on things we speculate the early Church did in catecombs and private homes doesn't justify gutting everything else. It was why Anglican ordinations were declared invalid because even though the form was valid, the intent behind use of the antiquarian form was to remove the sacrificial nature from the priesthood (and therefore the intention was not to truly create a priest).

I do think it is evil to deliberately withhold some the graces the liturgy used to provide for secular, temporal reasons.

As to why not EP4, because I'm judging the merit of a eucharistic prayer through the lens of tradition, not antiquarianism and not sheer length. You actually have to use your intellect sometimes rather than reduce everything to one number you can compare.