Some faculty have objected to addressing accessibility in their classes if it involves additional work-doing more than they already do. The objections are two major categories: 1. that captioning videos is too expensive and neither the schools nor departments will pay for them and 2. that they will make accommodations if they have disabled students in their classes, otherwise they see no need to do so.
Faculty have a good deal of work to do in order to teach effectively and to promote learning. Many members of the general public think that college faculty only work 12 hours per week (the length of time spent in a face to face classroom). Few realize how much effort goes into creating good lectures, creating learning materials, grading assignments and developing alternate methods to present materials. And faculty who are effective online teachers may spend additional time creating/supplementing materials for the online environment.
So how can faculty incorporate accessibility or Universal Design for Learning (UDL) principles without significant additional work? It depends on what the faculty member does when teaching. Just a couple of tips
present lecture outlines/notes prior so a student can use those to take notes
describe pictures, models and demos used in class in addition to showing those
Other tips are here: Delivering Accessible Lectures (from a Scottish University…)