Well... The core is still RISC, and it's all about modules added to it. The instruction sets of each module may also be relatively reduced in size. Maybe we need a new term: Modular Instruction Set Computer - MISC.
Intel keeps adding instructions to the main instruction set (but pretends to be modular by giving each addition a new label), because backwards compatibility. ARM is just pick and mix - make it as reduced or as complex as you fell like. I think RISC-V adopts this philosophy too.
One could think of this as having a lot more coprocessors than just a math one.