CONFIG_CRYPTO_BLAKE2S_ARM is not available for thedefaultarchitecture x86.
Result is shown for architecture arm

BLAKE2s digest algorithm (ARM)

modulename: blake2s-arm.ko

configname: CONFIG_CRYPTO_BLAKE2S_ARM

Linux Kernel Configuration
└─>ARM Accelerated Cryptographic Algorithms
└─>BLAKE2s digest algorithm (ARM)
In linux kernel since version 4.14.326 (release Date: 2023-09-23)  
BLAKE2s digest algorithm optimized with ARM scalar instructions. This
is faster than the generic implementations of BLAKE2s and BLAKE2b, but
slower than the NEON implementation of BLAKE2b. (There is no NEON
implementation of BLAKE2s, since NEON doesn't really help with it.)

source code: