EGBE:
Ryanair is not talking about removing seats, nor was Buster (who referred to "removing *reclining* seats"). The issue is about fitting simpler seats which don't recline, i.e. are lighter/less prone to break/cheaper to maintain. I assume it's the same argument for window blinds (not that I am defending Mr O'L on this matter).
The only way Ryanair would remove seats would be if they were allowed to carry passengers standing up - that way they could fit a lot more in.