Ive got 2030 SSH on my PC. To be fair I time travelled to 2035 and bought a used PC.
Too far in the future … 2025 crypto will be deprecated in 2030.
Received an answer to my feature request for ed25519 keys (SUP-61929):
Thank you for your feedback. We will consider adding this feature in the future.
Definitely not a “no”. 
Open your own feature request in support portal, possibly it helps.