I know loads of pilots who have been using RYR as good as RYR had been using them
SNAM what you describe is not "using" RYR, it is just ...
working for them. I guess that you would, using a similar argument, accept that when eventually a first pilot job entails paying Ryanair for the type conversion and then working the first two years without pay that you would take the optimistic view and say "clever use of Ryanair to get a foot on the ladder"!
The trouble is that the ladder on which you would have stepped will by then not have anything like as many steps upwards that you might have hoped for.