This is just marketing. They always do this because they know that if they say "Oh, we might charge for bathroom, we might charge even more for oversized cabin

This is just marketing. They always do this because they know that if they say "Oh, we might charge for bathroom, we might charge even more for oversized cabin bags" then they know that the majority who doesn't bring oversized cabin bags is gonna feel like "Wow, this really must be the most low-cost possible" and they perceive that the value is more because they think that they are getting a great deal and don't get me wrong I fly with Ryanair all the time I find it very good but it's kind of marketing stunts.