Why do I never see retired RAF officers with their own websites
Maybe they are too thick to be able to set one up ;-)
And to be honest the RAF out of all 4 (including RM here) has the most lack lustre uninspiring image on the web out of all of them. In fact the RNLI is better and more inspiring.
In theory you should be able to appeal to a vast broad range of interest even the none pointy end of things. But no you completely ignore everything but a load of pics of fast jets.
Look at the others and the full range of drills and skills are case booked and positively promoted as being full team members. Individual regiments/boats have interesting sites which appeal to be read even if you have just found them by accident.
So it may very well be that the other services officers are more web site rated mainly because they have had to do it and got their backsides booted when its crap.