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There is always Aemulator that can be used to run those older 26-bit software, but in my opinion all the major RISC OS software has been converted to 32-bit nowdays anyway.
In most cases, for example when saving files you can just type the path before the filename instead of dragging and dropping.
And seriously A7000 is an old system now and the user experience is not even close to IYONIX or some other newer system. RISC OS has also gone forwards after the 3.7 and I would not even consider anything below the 4.39 version.
For me the best parts of RISC OS are the applications. Software like ProCAD+, ArtWorks 2, Compo, Techwriter, Photodesk and many others. For an hobby OS there are still many things you can do with it and do those things very well. Instead of all the negative points and focusing on those things that can not be done, why not focus on those things that can be done?
RISCOS hasn't really changed all that much. What has changed is the underlying hardware. That's all.