I seemed to drop out of the habit of checking his blog and I pretty much gave up on the TA forums about a year ago, especially the overly cliquey Skiathos forum. The platform itself as a whole just isn't suitable for forums, they should just stick to reviews and links to make bookings as it was intended. No idea about Ian though it's interesting that his TA posts have dropped off after Steve's Skiathos Island News group on FB was closed down last year.
Ian hasn't lived in Skiathos for some time, according to a friend who does live there and knows him. He does still have a house there which he rents out, and pops back from time to tome. I would assume it's because of his wife's illness and that he has a young school-age daughter. I believe that he gets/got his information from friends on the island, as I've read exactly the same from others (Steve from Skiathos Island News being one of them.)
I've never met Ian, but he messaged me a few times when Paul was first ill in 2016, as we were desperate to travel and I needed some island medical - info just in case. Ian's wife was going through chemo at the same time as Paul and the info was very helpful.
The last update I read, he was back residing in the uk, unfortunately his wife’s illness had reached stage 4. I’m sure we all have read his excellent informative posts either via his blog or on another site, I think I speak for all of us in offering our thoughts and best wishes.