Friendly reminder you can entirely disable elliptic curve algorithms in your sshd_config and generate rsa keys larger than 4096 bits, 8192 or however large you like work just fine.

I have never trusted EC crypto because of all the magic involved with it, a sufficient reason to move from RSA has never been presented with compelling evidence as far as I am concerned. I do not care that it is faster, i prefer slow and secure to fast and complicated. It's a lot easier to explain RSA and why it's secure than the mile long justifications on curve crypto. The issue doesn't need to be in the algorithm, if the implementation is sufficiently difficult that works just as well as an intentionally misdesigned algorithm.