To answer your question; no. ABS has no effect on trail braking, which is braking to the apex. If you are in danger of locking your front wheel while braking to the apex, you're not doing it right. While learning from a pro racer at the track, I was shown up close how much faster a bike can be moving at maximum lean while trail braking, compared to rolling through the turn at maximum lean without trail braking. It's a dramatic (almost comical) difference.
Most of this has nothing to do with riding on the street, since there's very little similarity in that environment, but some of the skills are helpful to have on the street, like being able to brake while swerving and dealing with surprises.
I have ABS on one of my street bikes, and it could be a lifesaver if there's unseen gravel at an intersection... or just a panic braking situation. I'm certainly not beyond making a stupid mistake, and ABS can be a good thing.
SPEAKING of gravel at intersections, why in the hooey do rural road departments put sand all over the road in winter weather? I can't stand that! For the ONE hour it might improve traction during an icing situation, it leaves a ridiculous mess and dangerous lack of traction on the pavement for months after. God I hate that!
