Yes. Probably does mean that they are helping other authors. Or maybe they have personal things that are going on that is taking up their time. I've contacted quite a few editors this month and saw that most of them are either busy with their personal life or were helping authors with their work....
We must be getting into the busy personal time now with schools out and summer vacations. Over here all schools will be shut in 2 weeks time for around 6 to 8 weeks.