I don't understand why not. You allow Windows platforms to access your wifi and Windows is essentially a rooted operating system. Also Wifi buddy works just fine on rooted devices, so you used to support rooted devices, why stop? . Luckily I have found an old wifi buddy apk which I shall use until it stops working, at which point I shall abandon virgin apps on my phone entirely.
A shame as it is a really good idea and I was looking forward to it.
I'd like to add to this thread. Although it's a few months old now, the big change is I had a letter this week telling me my hub was being enabled for the hotspot service. I've never seen the point of the app until now, and this is a service I really wanted to use but sadly it's clear I cannot use it due to this stupid rooted restriction.
Rather than giving us a stock answer I'd like a suggestion actually putting into VM's management to see why this app cannot be run on rooted devices. I have turned off the hotspot facility on my hub until I can use the app. When the BT service works fine on a rooted device I cannot see why VM should be any different?