I would think that part of the reason Peter is concentrating on the Iyonix is that he owns one, and has for years, so he knows how RISC OS 5 works. As he's stated: "An A9-specific version is being considered subject to financial interest", so he can hardly be accused of deliberately trying to fragment the market.
Peter has put a lot of his free time and resources into RISC OS, for little personal gain. He also deals with being verbally attacked by others whenever he makes any form of comment, and from my own experience, is glad to have assistance when it is offered.
Oh, and I believe this is the second time you've mentioned on drobe that you're leaving. I recommend action rather than words in future.
The RiscPC is 12 years old. The fact that some people are still using them doesn't magically make them capable of running processor intensive software at today's expected speeds.