Not really accurate.
Strut braces keep the top of the strut towers from moving inward, or closer together, resulting in less camber change. They do little to affect caster or toe. Upward movement instead causes bumpsteer from toe changes only.
Reviewing the Supra Product Guide that the Toyota rep gave me:
The suspension is designed so that body flex at the upper wishbone suspension attachment results in less toe change and bump steer, and results in minimal camber changes only.
Greddy's old catalog states:
As you add perfomance modifications such as lowering springs, stiffer dampeners, and swaybars, a strut tower brace will result in more consistent suspension geometry and more consistent camber.
Hotchkis Tuning states that that the braces are used for reducing flex and camber changes, also.
So does Rennsport, Stillen, and RMM.
Everywhere I look, including a suspension tuning manual states the same thing.
There may be a debate. But, it seems that those in the know state that it reduces camber change, causing a more stable footprint immediately on turn in.
BUT...who cares! If you're going to track days to have fun and learn...then keep it cheap. You will have no less fun with a cheap set of Eibach Pro's on stock shocks, on stock wheels with some halfway decent tires the the next guy who bought $3000 wheels, $1300 tires, $1500 coilovers, $400 anti-sways, and $300 strut braces. In fact, that guy could be trying a bit too hard!
Think about it...not only will you be having just as much fun as the next guy, but you will probably have enough extra cash to spend a week in the islands.
Unless you think your Michael Schumaker, don't get carried away. In fact, don't get carried away with spending huge amounts of money anyway. If you're that good, someone else will pay your way.
HAVE FUN!