I also would like to address the idea of fairness to other students. Appropriate accommodations are indeed fair. Your description of some of the accommodations surprised me . If in fact these are some of your accommodations, I can see your concerns. Some of them are unfair.
Testing is an opportunity to demonstrate knowledge that the student has mastered.
Allowing students who are not prepared to claim disability as an excuse is not doing anyone a favor. The first thing that stood out was providing definitions of words. The students should know those definitions before they take the test, just as it is expected of other students. Yes, that is an unfair advantage. Any student would get a higher grade with that method.