I find the same thing when I teach a class online. Yes, it can be a bit impersonal. But the feedback I am able to give and the give-and-take online between teacher and student works exceptionally well. I am even able to deliver "lectures" on You Tube or Vimeo. Now, not all online classes work as well as writing-based online classes. I believe web-based creative writing workshops, if facilitated well, can be a dynamite experience for everyone.
Don't dismiss taking an online writing class. Sure, check out the credentials of the teacher, the institution or school conducting the class, but be open, willing to work with the new technologies, not against them. It will benefit you and your writing as you move forward as an artist.
David W. Berner