Anyhow, my take has always been I want as many types of training partners as possible. But if there are women who might need a woman's only short term beginners class in order to initially get onto the mat, seems like no harm done.
Exactly. It's only a summer-long (probably about six weeks) course. When I first started Aikido, I was far more comfortable working with other women, though I did work with many of the big guys as well. Now I usually take on the biggest guys on the mat to make sure my technique actually works.