Generally speaking, trademark and copyright law are designed to protect IP in order to only allow the owners to profit. Anytime someone attempts to make money off some else’s IP, the copyright and trademark law violations begin. Anyone attempting to make money off someone else’s IP should find and hire a lawyer who specializes in IP law. Why? Because it’s a damned complicated area of the law, even more complicated than others. The woman who wrote that email for WotC is an a attorney specializing in IP law. I sincerely doubt what she said is wrong or even misleading.
Actually, she is isn’t referencing personal use. Making copies for personal use is fine. What she’s getting at is making copies for distribution. Which is totally illegal, even if a person doesn’t profit.