I have multiple RSA keys of various lengths for servers that don't support my Ed25519 key (some cloud services sadly limit key length AND require RSA, despite

I have multiple RSA keys of various lengths for servers that don't support my Ed25519 key (some cloud services sadly limit key length AND require RSA, despite their underlying ssh server actually supporting better). I routinely use 16384 bit RSA keys daily and have never had a noticeable performance impact. Sure, there's clearly the diminishing returns argument, but as there would be no impact for most folks why not?