"something finally snapped in my mind in April that made me see maintaining Drobe as a chore rather than as an enjoyable hobby"
"However I've been spending more and more of my free time away from computers while searching for new hobbies separate from work."
"Also I no longer use RISC OS (I use Linux and Mac OS X at home), so I've fallen out of love with the whole thing."
I would say that it is very clear that his heart is not in it any more.
Yes he does talk about changes and doing things, but talk is cheap, doing something takes effort, which is really hard when you are not motivated. I think he would do better to come to terms with how he feels and hand over to somebody else.