Does he? Maybe in an ideal world, but the world is at it is. I have used (I think) every version yet produced of RISC OS Firefox including 188.8.131.52; each one has been an improvement on its predecessor, to the point where I am seriously considering removing NetSurf* from my app. loading sequence on bootup and replacing it with Firefox. Sure, printing doesn't work properly (nor does NetSurf for that matter), there's no Flash support, the dropdown menus aren't fully implemented, but this latest version is by far the most capable RISC OS browser yet offered, and runs at acceptable speed on this Iyonix. For all of which I am sincerely grateful to its developer.
(*I don't mean to knock NetSurf, which is excellent as far as it goes, but that isn't as far as Firefox).