There are designs for submersible aircraft carriers.
https://indowflavour.artstation.com/projects/d8L9e1
That is pretty cool and consistent with the idea that weapon systems will continue to evolve. I suppose it makes sense to design this type of submarine to work both in ice because it is primarily designed to deploy in the artic but also in an ice-free environment just to increase its versatility. I take exception with the article’s mention of a future ice-free artic as a reason for those design considerations. An ice-free artic isn’t going to happen.