It seems we are getting one step closer to the role of an FO being voluntary, the “reward” being flight hours that get you nearer your command.
Ryanair is no stepping stone, they are a huge success story, it will soon be one of the only major airlines in europe, and the largest at that. Where do you plan on stepping to? I am not aware of a single other “better” airline with even the hint of thinking about recruiting any time over the next few years. In the UK Virgin/BA will not need “off the street” pilot recruits for the best part of this decade. Between them they have over 1,000 pilots in priority return pools, no planned expansion above 2019 levels, and very very few age 65 retirements.
If you join Ryanair expect it to be your career airline. If you are ok with that, and the conditions that go with it then fill your boots. If you are not, then perhaps choose a different career.