Demo reels and taped auditions are two things that often go out to industry professionals whom you have never met, and will be the basis of their decision to see you in person. That's why quality is so important when it comes to these things- it will make the difference between booking the job and looking like an amateur. You wouldn't use a snapshot your cousin Gertrude took as your headshot- so why would you send out an audition or reel that is not professional quality?
Being an actor myself, I understand how important each interaction is- especially when you are not representing yourself live in person. I am also active in the community and keep up to date with casting director preferences. I regularly communicate with industry professionals to learn what they are looking for in submitted materials, common dislikes, and changing trends within the industry.