There is a cap to the maximum security possible on secp256k1 at n/2 of key size.
256 bit keys therefore only provide 128 bits of security.
Anything more than 128 bit for bitcoin is just "feel good" territory.
Isnt that worrysome? Most crypto systems already uppgrade to 2048/4096 bits and we are still stuck at 128 bit?
At least does electrum have key stretching to make brute force slower?