These are all fair points, no doubt.

Respectfully, my response is that teachers are highly trained professionals and most of us take the job very seriously. The teacher generating the presentation will review the content for accuracy before presenting it, no different than a teacher suggesting links or YouTube videos for students to use as a basis for research.

All the content and activities are editable and after an Undergrad and often a Masters, I feel that the teacher is perfectly qualified to make any adjustments necessary.

I do understand your sentiment though.