If someone wants to teach martial arts forms for sport or health or art or cultural preservation or meditation, devoid of combat application, then I have no objection as long as they make that clear to students up front and don't pretend otherwise.1. Only teach form. Don't teach application.
2. If a student makes mistake in that form, don't correct that student.
3. Modify the form to be easy of learning even if it may lose the original meaning.
If someone wants to modify the forms to make them accessible to more students, then I have no objection as long as it doesn't compromise the objective of the exercise (sport or health or art or meditation or whatever they are aiming for).
#2 is where I draw the line. If you aren't providing feedback to your students, then you aren't being a teacher. Whether you are teaching for the sake of combative effectiveness or health or artistic performance, feedback and correction is part of the job. (Teaching through instructional videos is a special case. Whether it's for martial arts or washing machine repair, I'd say that instructional videos fall into the category of reference resources for people to teach themselves.)