If the axles were not installed properly (which is something that I am starting to suspect myself), specifically do you know what part may be the culprit? I am starting not to trust the mechanic I took it to and rather him not touch my cars anymore.
There are different CV axles for Camrys with and w/o ABS, so your mechanic might have installed the wrong ones. My guess is the non-ABS axles don't have the toothed ring for the ABS wheel speed sensor to read. The teeth cannot be seen without partially removing the axle, so it's not easy to check.
The ABS wheel speed sensors do not need to be removed when replacing the axles, so there's no reason your mechanic should've touched them. I suppose it's possible he damaged them, if he's a klutz or an idiot.
On the other hand, if the wrong axles are installed, I don't think the ABS light would ever turn off. Bottom line: get your ABS error codes pulled and go from there. If both your front sensors come up as bad, then wrong axles might be the problem.