Having driven a lot of autocross and track (quite successfully at both I'll add)... if you're not trail braking at autocross you're going slow.
You want to maximize the gSum/combined G and you can't do that on entry unless you're trail braking.
Also, I've driven S2000s including CRs, first gen twins, Evos, Miatas, Corvettes, Mustangs, Camaros, Caymans, 911s, Teslas, all sorts of FWD shitboxes, etc. Yeah every car is different but your goal is still to put the car at the limit and you're not going to do that without trail braking.
FWIW I've never liked the pedal dance. Why give up the free advantage of effectively being able to brake every wheel individually to maximize the braking potential?
and yes, I *can* show data logs of trail braking at autocross to maximize the grip
