There's a lot of talk in our industry about professionals vs amateurs. Having done this for 30+ years, we've had a major shift in the amount of "amateurs" or "novices" that have an interest in this field. Whether it's being a Producer, Engineer or Mixer.
As time goes on, budgets get smaller and we are all looking for shortcuts. It’s understandable. And even when I have the budget to do something right, I don’t always have the time. So shortcuts run thru our minds all the time when dealing with projects and deadlines.
As a Mixer, I have a policy that I only accept WAV files. I started this because I noticed that I much preferred mixing tracks when the client wasn’t using the same DAW that I was using. Less to think about and less to go wrong.