RISC-V extensions names have prefixes, S for supervisor mode, Z for unprivileged extension, and so on. https://www.cnx-software.com/2019/08/27/risc-v-bases-and-ext...

Zabha: Zacas & A extensions Byte and Halfword Atomic memory operations (where A refers to standard extension for atomic operations)

Zacas: Z Atomic Compare-And-Swap

and so on. You can ridicule them, but then you should also ridicule the x86 world for names like MPSADBW, PCMPESTRM or VFMADD132PD.